Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
overview section » overview social
developpement il » developpement de, developpement et, developpement du
method overview » methods overview
4 developpement » de developpement, le developpement, et developpement
section aid » section i, section ii, section iii
trade time » trade tie, trade crime, trade ties
il afrique » l afrique, en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: method overview section aid trade time communication costs 4 developpement il afrique.*.