Perhaps you should try some spelling variations:
child development » world development
technology chief » technology china, technology brief, technology choices
costs child » costs china
a afrique » l afrique, en afrique
flows do » flows how, flows job, flows _
do risk » d risk, de risk, dam risk

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology chief information flows do risk communication costs child development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology chief information flows do risk communication costs child development a afrique.*.