Perhaps you should try some spelling variations:
biological resources » biological responses, biological response, biological roles
biological research » biomedical research, biology research
lexical resources » digital resources

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((((local resources) OR (((biological resources) OR (biological research))))) OR (lexical resources)) ) OR ( social reform )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((((local resources) or (((biological resources) OR (biological research))))) or (lexical resources)) ) or ( social reform ))".
• Adding a wildcard symbol may retrieve word variants: (( ((((local resources) or (((biological resources) OR (biological research))))) or (lexical resources)) ) or ( social reform ))*.