Perhaps you should try some spelling variations:
oral communication » personal communication
information speed » information sheet, information needed, information needs
child development » world development
development band » development bank, development banks
costs child » costs china
band africa » bank africa, bank african, can africa
speed de » speed re, speed per, speed _
de oral » de otras, new oral

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information speed de oral communication costs child development band africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information speed de oral communication costs child development band africa.*.