The Search function can only accept a sing table as the data source. Since the name of the student is a column in the student table rather than the loans table, it's necessary to create the 'student full name' calculated field and to search on that. It's not possible to call the Search function and to search on a related table without the calculated field.
If however you want just to display the student name on a gallery that is bound to the Loans table without creating a calculated field, you can do this by using this ThisItem.Student property. The syntax would look something like this:
Its hard to answer your question without actual details about the tables.
There is no way for us to know if we can help you get the name without understanding how the data on the screen relates to the Table that has the name.
If you can provide that please, that or still need that but we need to search Profiles based on some information on the screen.
I am sure we can figure it out.
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