Perhaps you should try some spelling variations:
value communication » failure communication, face communication, voice communication
oil development » rail development, tool development, social development
technology 3.2 » technology 2.2, technology 3.1, technology 2
3.2 relation » 3.2 correlation, 3.2 relationship
crisis value » crisis volume, crisis alba, crisis case
relation de » relation des, relations der, relacion del
china labor » china labour, china's labor, child labor
de crisis » debt crisis, pre crisis, age crisis
costs oil » costs only, costs ii, costs iii

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

• Adding a wildcard symbol may retrieve word variants: technology 3.2 relation de crisis value communication costs oil development china labor.*.