Perhaps you should try some spelling variations:
modern communications » modern communication, modern communicators, border communications
communications cost » communications costs, communications cross, communication costs
book development » bank development, textbook development, 2 development
technology der » technology does, technology 4ir, technology dlt
relativen debt » relative de
price modern » pre modern, price model, price models
china labor » china labour, china's labor, child labor
debt price » debt service, debt profile
cost book » lost book, coast books, best book

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

• Adding a wildcard symbol may retrieve word variants: technology der relativen debt price modern communications cost book development china labor.*.