# 2.3. Filter by Keyword
## 2.3.1. Filter by Keywords
Feature: Analysis aid
Module: Filter by Keywords
Feature element: ***Filter by Keywords***
The feature **Filter by Keywords** enables you to search for products whose names contain those keywords to your preferences.
> **Example:**
>
> At the Keywords bar of Metric Analytics, you put in the keywords “iphone”, “ipad”, “macbook”, the result will be a list of products that “iphone”, “ipad”, “macbook” appear in their names.
You can put in this Keyword bar items such as keywords, product links, shop links.
## 2.3.2. Filter by Mandatory Keywords
Feature: Analysis aid
Module: Filter by Keyword
Feature element: ***Filter by Mandatory Keywords***
The feature **Filter by Mandatory Keywords** allows you to filter out only a list of products whose names must contain every designated word.
You need to add a "+" sign before the keyword or shop links or product links to apply this feature.
> **Example:**
>
> Applying keywords “iphone”, “ipad”, “macbook”, “+512gb”.
>
> The result will be a list of products whose names include “iphone” or “ipad” or “macbook” and must have “512gb”.
## 2.3.3. Filter by Excluding Keywords
Feature: Analysis aid
Module: Filter by Keyword
Feature element: ***Filter by Excluding Keywords***
The feature **Filter by Excluding Keywords** allows you to filter out only a list of products whose names must not contain any of the designated words.
You need to add a "-" sign before the keyword or shop links or product links to apply this feature.
> **Example:**
>
> At the Keyword bar, you put in these keywords “iphone”, “ipad”, “macbook”, and at the Exclude Keyword bar, enter “128gb”.
>
> This will result in a list of products whose names contain “iphone” or “ipad” or “macbook” and must not contain “128gb”, meaning a product named “Điện thoại Apple iPhone 13 128GB” will be eliminated in the result.
## 2.3.4. Option “Smart Query” for keywords
Feature: Analysis aid
Module: Filter by Keyword
Feature element: ***Option “Smart Query” for keywords***
The feature **Option “Smart query”** helps you find products where every single word in the keywords entered in the Keyword bar did not need to appear on the product title consecutively.
> **Example:**
>
> Smart query with the keyword “kem chống nắng” (meaning “sunscreen”).
>
> **Normal query:** find products whose names contain the 3 words above standing adjacently with each other.
>
> **Smart query:** find products whose names contains 3 words “kem”, “chống”, “nắng” standing separately from each other, such as “kem nền chống nắng”, “kem đi nắng chống tia UV”,... while normal query could not find them.
Watch detailed instructions [here](https://hotro.metric.vn/en/analysis-aid/pages/ejC1SjZ0uHTNAY9YRC1j#id-5.-keywords).
For any further requests, please contact hotline **033 806 2221**, or send to email: **** for advice and answers.
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