the word ring, but rank items higher if they also contain diamond
+pendant -gold
the word pendant but not gold
+watch ~classic
the word watch, but if the item also contains the word "classic", rate it lower than if item does not.
This is "softer" than a search for +watch -classic, for which the presence of classic causes the item not to be returned at all
gold*
words such as gold, golden
"watch case"
the exact phrase watch case (items that contain watch case but not watch cigar travel case)
