There are several ways to search for a particular user or a segment of users. Depending on goals you're going to reach, you can search by an existing audience segment (i.e., Filter created in your Pushwoosh account), create a new segment for User Explorer search, or search specific users by their User ID.
Creating a segment
To search for a segment of users who meet some conditions you specify, select the New Segment option from the dropdown.
Then, choose a Tag to apply. The dropdown menu contains all Tags created in your Pushwoosh account. You can add as many conditions as needed. The segment will include customers who comply with all the conditions specified.
Choose an operator relating the Tag and its values. Each Tag type has its own list of operators available, check them out in Tags and Filters guide.