Perhaps you should try some spelling variations:
economics report » economic report, economies report, economy report
recherche prend » recherche en, recherche project, recherche partie
recherche land » recherche dans, recherches dans, recherche les
recherche und » recherche en, recherche d'une, rechtliche und
studi e » studi per, studia ve, studie 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: studi e ((recherche land) or (((recherche und) OR (recherche prend)))) economics report ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: studi e ((recherche land) OR (((recherche und) OR (recherche prend)))) economics report ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "studi e ((recherche land) or (((recherche und) OR (recherche prend)))) economics report ;*".