Has been answered many times before, use search.
Your examples are really bad filenames. There is no marker between artist and title, so Mp3Tag has no chance to detect what is what.
You can use the Filenname - Tag Converter with the following formatstrings:
for artists with one word like: Cameo Its Like Candy.mp3
%artist% %artist% %title%
for artists with two words like: Elton John Benny And The Jets.mp3, Brooke Benton A Lovers Question.mp3, Eddy Grant Walking On Sunshine.mp3
%artist% %artist% %artist% %title%
for artists with three words like: Creedence Clearwater Revival Sweet Home Alabama.mp3
to get the whole name in the title and don't care about the artist