Perhaps you should try some spelling variations:
representation des » representation de, representation _, representation 3
representation et » representation _, representation 3, representation 1
commercial across » commercial crops, commercial actors, commercial crisis
north la » north sea, north bay, north _
north a » north _, north sea

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

• Performing a fuzzy search may retrieve terms with similar spellings: commercial across ((north la) OR (north a)) ((representation et) OR (representation des)) studies.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "commercial across ((north la) OR (north a)) ((representation et) OR (representation des)) studies.".
• Adding a wildcard symbol may retrieve word variants: commercial across ((north la) OR (north a)) ((representation et) OR (representation des)) studies.*.