Perhaps you should try some spelling variations:
dose filosofia » de filosofia, masse filosofia, sobre filosofia
de litterature » la litterature, et litterature
studies dose » studies ds, studies do, studies does
filosofia de » filosofia del
rats » rate, rays

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(rats OR rat) gavage studies dose filosofia de litterature*".