Ah… like for example click on file names inside Windows explorer?
My suggestions are:
Use regular letters and avoid special charaters like +*# etc.
Avoid letters and numbers that are confused by OCR, for example the number
1 and the letter
l can be tricky. See the screenshot below.
If you can, using all caps might be helpful (just a guess, not tested)
Experiment if engine1 or engine2 work better for you (Usually both engines work well for screenshots. But depending on your font, one might work better then the other.)
If you still have OCR issues, please post a screenshot of the problematic text(s) and we can help further.