Perhaps you should try some spelling variations:
development chinese » development china, development change, development china's
models development » model development, module development, model developments
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technology 1 » technology _
chinese east » chinese earth, chinese heart, chinese case
1 relations » 3 relations, a relations, 1.2 relations
relations a » relations _
cost models » cost model, logit models
prices de » prices does, prices _, prices a
a prices » a price, 2 prices, gas prices

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

• Adding a wildcard symbol may retrieve word variants: technology 1 relations a prices de communication cost models development chinese east.*.