Perhaps you should try some spelling variations:
china communication » china communications, chief communication, china's communications
yemen development » women development, uneven development, human development
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
variation das » variation des, variation data, variations des
dem china » does china, did china, im china
das dem » das der, das den, des dem

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: (typologie OR typology) des variation das dem china communication _ yemen development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: (typologie or typology) des variation das dem china communication _ yemen development en afrique.*.