Perhaps you should try some spelling variations:
"best science book over" » "del science book over", "les sciences book over", "art science book over", "best science from over", "best science vol over"
"best science food over" » "del science food over", "les sciences food over", "art science food over", "best science from over", "best science mad over", "best science mind over"
"new science book ver" » "new science from ver", "new science vol ver", "del science book ver", "les sciences book ver", "open science book ver", "new science book new"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"best science book over\") OR (\"best science food over\"))) OR (\"new science book ver\"))~".
• Removing quotes may allow a broader search: (((( best science book over ) OR ( best science food over ))) OR ( new science book ver ))~.
• Adding a wildcard symbol may retrieve word variants: (((("best science book over") OR ("best science food over"))) OR ("new science book ver"))*.