Perhaps you should try some spelling variations:
general relations » general regulations, general reflections, general equations
general relative » general relating, general operative, general ergative
general relation » general regulations, general revolution, general circulation
relativity » relatively

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: (( general relativity ) OR ( ((((((general relative) OR (general relations))) OR (general relation))ly) OR (((((general relative) OR (general relations))) OR (general relation)))) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( general relativity ) or ( ((((((general relative) OR (general relations))) or (general relation))ly) or (((((general relative) OR (general relations))) or (general relation)))) ))".
• Adding a wildcard symbol may retrieve word variants: (( general relativity ) or ( ((((((general relative) OR (general relations))) or (general relation))ly) or (((((general relative) OR (general relations))) or (general relation)))) ))*.