Perhaps you should try some spelling variations:
historical buildings » historic buildings
historical building » historic buildings, historical thinking
2.2 conservation » 1.2 conservation, 10.2 conservation, 12 conservation
22 conservation » 12 conservation
tiago island » tobago island, two island, bioko island
2f cape » 2 cape, 21 cape
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: %((historical buildings) OR (historical building)) %((2.2 conservation) OR (22 conservation)) AND restoration %((2f 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: "%((historical buildings) or (historical building)) %((2.2 conservation) or (22 conservation)) and restoration %((2f cape) OR (off cape)) verde %2f sa%cc%83o ((tiago island) or (sado island))%22".
• Adding a wildcard symbol may retrieve word variants: %((historical buildings) or (historical building)) %((2.2 conservation) or (22 conservation)) and restoration %((2f cape) OR (off cape)) verde %2f sa%cc%83o ((tiago island) or (sado island))%22*.