As you add more and more records and bases, the ability to search becomes increasingly important.

To search among all of your bases, tap the magnifying glass icon in the top right-hand corner of the home screen. You will be presented with a find dialog in which you can enter your query.

To search within a table, tap the magnifying glass icon in the top right-hand corner of the base. You will be presented with a find dialog where you can enter your query. 

Any records that match the query will appear. 

If you find yourself repeatedly searching for the same records, you may want to create a new view with appropriate sort and filter criteria.