Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
ante communication » parte communication, une communication, vote communication
rural development » social development
technology die » technologie die, technology does, technology 4ir
relation debt » relation de, relation des, valuation debt
die relation » die relative, die reaktion, die revolution
debt crises » debt crisis
crises ante » crises active, crises matter, crises since
china labor » china labour, china's labor, child labor

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

• Adding a wildcard symbol may retrieve word variants: technology die relation debt crises ante communication cost rural development china labor.*.