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

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

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