Hi Plamena,
OData calls are simply REST services with additional parameters. So using a microflow you can call a OData service using the Mendix native REST connector. You can then pass in the REST call OData parameters in the URL call.
For example:
http://services.odata.org/OData/OData.svc/Category(1)/Products?$top=2&$orderby=name
So all you need to do is build a search field on your Mendix page then pass this data to the Microflow to pass the search data to the URL and order parts.
Regards
Simon
Did you see this part of the documentation: https://docs.mendix.com/refguide/odata-query-options
Have not yet played with it myself, but depending on what you want to filter you might be lucky.
Regards,
Ronald