Perhaps you should try some spelling variations:
communication model » communication media
oral communication » personal communication
trade development » software development
information gaps » information gap
development en » developpement en, development menu, development eco
model trade » modern trade, model traem, model tree
gaps de » gaps do, camps de, gaps new
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 gaps de oral communication model trade development en afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information gaps de oral communication model trade development en afrique.*.