Search Text offers a search like this:

 

The search operates on the current column of data, though you can change the choice as in this screenshot, where Concordance is selected.

 

The syntax is as in Concord. In the case of a concordance line, the search operates over the whole context so far saved or retrieved. Here the word plague has been found near the blue concordance centre word but in line 28 it is far away:

 

To search again, press OK again....

 

In a word list you could get something like this:

 

Whole word – or bung in an asterisk

The syntax is as in Concord, so by default a whole word search. To search for a suffix or prefix, use the asterisk as in the word list example here.