Perhaps you should try some spelling variations:
22historic buildings » historic buildings, _ historicbuildings, historical buildings
historic building » historic buildings, historical building, historical buildings
2f conservation » 20 conservation, 2.1 conservation, 2.2 conservation
tiago island » tobago island, two island, bioko island
21 cape » 21 case, 21 cake, 21 cap
11 cape » 11 case, 11 care, 11 came
2fa a » dfa a, 2fa _, 20a a
2f a » e2f a, h2f a, 2 a

Try widening your search to All Fields.

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: %((22historic buildings) OR (historic building)) %2f conservation AND restoration %((off cape) OR (((21 cape) OR (11 cape)))) verde %((2f a) OR (2fa a))%cc%83o ((tiago island) OR (sado island))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22historic buildings) or (historic building)) %2f conservation and restoration %((off cape) or (((21 cape) OR (11 cape)))) verde %((2f a) or (2fa a))%cc%83o ((tiago island) or (sado island))%22".
• Adding a wildcard symbol may retrieve word variants: %((22historic buildings) or (historic building)) %2f conservation and restoration %((off cape) or (((21 cape) OR (11 cape)))) verde %((2f a) or (2fa a))%cc%83o ((tiago island) or (sado island))%22*.