diff --git a/web_advanced_search/__manifest__.py b/web_advanced_search/__manifest__.py
index 5f751061e..0ff2a14ed 100644
--- a/web_advanced_search/__manifest__.py
+++ b/web_advanced_search/__manifest__.py
@@ -1,6 +1,7 @@
 # Copyright 2015 Therp BV <http://therp.nl>
 # Copyright 2017 Tecnativa - Vicent Cubells
 # Copyright 2018 Tecnativa - Jairo Llopis
+# Copyright 2020 Brainbean Apps (https://brainbeanapps.com)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
 {
diff --git a/web_advanced_search/readme/CONTRIBUTORS.rst b/web_advanced_search/readme/CONTRIBUTORS.rst
index 89b679a1f..2bdfed063 100644
--- a/web_advanced_search/readme/CONTRIBUTORS.rst
+++ b/web_advanced_search/readme/CONTRIBUTORS.rst
@@ -5,3 +5,4 @@
 * Jose Mª Bernet <josemaria.bernet@guadaltech.es>
 * Simone Orsi <simone.orsi@camptocamp.com>
 * Dennis Sluijk <d.sluijk@onestein.nl>
+* Alexey Pelykh <alexey.pelykh@brainbeanapps.com>
diff --git a/web_advanced_search/readme/ROADMAP.rst b/web_advanced_search/readme/ROADMAP.rst
index 8a0a68717..bab0de12a 100644
--- a/web_advanced_search/readme/ROADMAP.rst
+++ b/web_advanced_search/readme/ROADMAP.rst
@@ -8,3 +8,7 @@ Improvements to the search view in this addon:
 * Use widgets ``one2many_tags`` when searching ``one2many`` fields
 * Use widgets ``many2many_tags`` when searching ``many2many`` fields
 * Allow to edit current full search using the advanced domain editor
+
+Improvements to the `is child of`/`is parent of` operators:
+
+* Show the operators only for models with `_parent_store = True`
diff --git a/web_advanced_search/readme/USAGE.rst b/web_advanced_search/readme/USAGE.rst
index b8e6f2778..9e1ac6d3f 100644
--- a/web_advanced_search/readme/USAGE.rst
+++ b/web_advanced_search/readme/USAGE.rst
@@ -2,7 +2,8 @@ To use this module, you need to:
 
 * Open *Filters* in a search view
 * Select any relational field
-* Select operator `is equal to` or `is not equal to`
+* Select one of operators: `is equal to`, `is not equal to`, `is child of`,
+  or `is parent of`
 * The text field changes to a relational selection field where you
   can search for the record in question
 * Click *Apply*
diff --git a/web_advanced_search/static/src/js/web_advanced_search.js b/web_advanced_search/static/src/js/web_advanced_search.js
index 571ea6c08..00a488fbd 100644
--- a/web_advanced_search/static/src/js/web_advanced_search.js
+++ b/web_advanced_search/static/src/js/web_advanced_search.js
@@ -1,5 +1,6 @@
 /* Copyright 2015 Therp BV <http://therp.nl>
  * Copyright 2017-2018 Jairo Llopis <jairo.llopis@tecnativa.com>
+ * Copyright 2020 Brainbean Apps (https://brainbeanapps.com)
  * License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). */
 
 odoo.define("web_advanced_search", function (require) {
@@ -16,6 +17,8 @@ odoo.define("web_advanced_search", function (require) {
     var Widget = require("web.Widget");
     var Char = core.search_filters_registry.get("char");
 
+    var _lt = core._lt;
+
     SearchView.include({
         custom_events: _.extend({}, SearchView.prototype.custom_events, {
             "get_dataset": "_on_get_dataset",
@@ -153,14 +156,23 @@ odoo.define("web_advanced_search", function (require) {
             // To make widgets work, we need a model and an empty record
             FieldManagerMixin.init.call(this);
             this.trigger_up("get_dataset");
-            // Make equal and not equal appear 1st and 2nd
+            // Unfortunately, it's impossible to check if model supports these
+            this.operators = this.operators.concat([
+                {value: "child_of", text: _lt("is child of")},
+                {value: "parent_of", text: _lt("is parent of")}
+            ])
+            // Prioritize equal, not equal, child_of, parent_of
             this.operators = _.sortBy(
                 this.operators,
                 function (op) {
                     switch (op.value) {
                     case "=":
-                        return -2;
+                        return -4;
                     case "!=":
+                        return -3;
+                    case "child_of":
+                        return -2;
+                    case "parent_of":
                         return -1;
                     default:
                         return 0;
@@ -242,6 +254,8 @@ odoo.define("web_advanced_search", function (require) {
             switch ($operator.val()) {
             case "=":
             case "!=":
+            case "child_of":
+            case "parent_of":
                 this._field_widget_name = "many2one";
                 break;
             default: