Perhaps you should try some spelling variations:
data communication » data communications
des developpement » des developpements, de developpement, le developpement
overview section » overview social
developpement la » developpement de, developpement et, developpement du
section have » section case, section three, exertion have
have trade » slave trade, have made
la afrique » l afrique, la fabrique, en afrique
costs des » costs fees

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

• Adding a wildcard symbol may retrieve word variants: methods overview section have trade data communication costs des developpement la afrique.*.