BASH find not finding all files

A painful discovery in the sense of time... the missing quotes on the following code was causing unexpected behavior when I was trying to locate files in BASH using find. When I did not have the double quotes around the -name option values, they were not functioning as wildcards as I'd expected.

This did not work:

files=$(find "," -name * -or -name *.psp.txt -or -name *

This did work:

files=$(find "." -name "*" -or -name "*.psp.txt" -or -name "*") 
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