Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developing china » developing china's, development china, developing caring
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
information 3 » information 2
china trends » china trade
de personal » der personal, des personal, de persona
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
3 de » 3 die, 3 der, 3 des

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 3 de personal communication costs 2.2 developing china trends.*.