Perhaps you should try some spelling variations:
historic building » historic buildings, historical building, historical buildings
20 conservation » 10 conservation, 2.1 conservation, 10 conservative
1 conservation » 11 conservation
tiago island » tobago island, two island, bioko island
2f cape » 21 cape
2 cape » 2 care
2f sa » 2f 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: %((_ historicbuildings) OR (historic building)) %((1 conservation) OR (20 conservation)) AND restoration %((((2f cape) OR (2 cape))) OR (off cape)) verde %2f sa%cc%83o ((tiago island) OR (sado island))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((_ historicbuildings) or (historic building)) %((1 conservation) or (20 conservation)) and restoration %((((2f cape) OR (2 cape))) or (off cape)) verde %2f sa%cc%83o ((tiago island) or (sado island))%22".
• Adding a wildcard symbol may retrieve word variants: %((_ historicbuildings) or (historic building)) %((1 conservation) or (20 conservation)) and restoration %((((2f cape) OR (2 cape))) or (off cape)) verde %2f sa%cc%83o ((tiago island) or (sado island))%22*.