There are three ways to search case records within Dynamics 365:

In Customer Service Hub, open Cases. The following screenshot shows the three ways of searching:

For Quick Search

Search for records, say “Product”. Irrespective of the view selected, the system will display a search result with list of all the records that being with the search term. In this example it shows all the case titles that begin with the term “Product”.

There may be instances where the case tile may not begin with the term you are looking for. In such cases you can use wild card characters, for example: *product*. In this example the system will populate a search result with all the case titles that has the term “product” in it,

For Global Search

Type the search criteria in the global search, for example: “Adventure”. You can use wild card characters as well, such as “*Adv*”.
The system will look into all the entities and display categorized search results as shown below. You can also apply filters to show the results for a particular entity.

Click on the funnel icon to open the Advance Find.
Here you can create a simple or complex query, edit columns, provide filtering criteria and click on Results to see the result based on your query.
You can also save the query as your personal view.
So for example:
- Use an existing view, say Active Cases.
- Click on Details to change the filters.
- Select a filter: Case Title Contains *adv*.
- Select the filter lines and group them as OR.
- Click Results.

You can also use filter on the columns in a view as well:

Open an existing view. Say, “All Cases”
Click on the filter icon beside a column header.
You can apply filtering criteria for each column. You can also apply filters on multiple columns at a time.
Click Apply to see the result.