If I search for images of "F-16" I get no results
If I search for "F-16 viper" I mostly get pictures of snakes and the car
"F-16 fighter jet" suggestion returns pictures of F-22s, F-35s, J-20s, Su-57s... every fighter that isn't an F-16.
I experimented, and found that if I remove the hyphen, it works fine and I get pictures of F-16s:
I then found that other hyphenated terms like "dunning-kruger" and "G-force" had the same behavior.
Search terms with a hyphen that is not the first character in the term should influence image search results.