Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
more communication » force communication, moral communication, vote communication
technologien und » technologie und, technologien des, technologien fur
oil development » rail development, tool development, social development
und relation » und regulation, und relational, und relationen
relation des » relation de, relationen des, relations der
prices more » prices power, prices macro
china labor » china labour, china's labor, child labor
des prices » debt prices, des proceso, gas prices
cost oil » post oil, bust oil, cost iii

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

• Adding a wildcard symbol may retrieve word variants: technologien und relation des prices more communication cost oil development china labor.*.