Perhaps you should try some spelling variations:
studies blcoll » studies blood, studies incols, studies nicole
studies dlco » studies dc, studies do, studies dance
fisiologia a » fisiologia e, fisiologia 1, fisiologia 2
rat sprague » rats sprague, male sprague, iris sprague

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: rat sprague ((studies dlco) OR (studies blcoll)) fisiologia a literature.
• Adding a wildcard symbol may retrieve word variants: rat sprague ((studies dlco) or (studies blcoll)) fisiologia a literature*.