Perhaps you should try some spelling variations:
communication model » communication media
trade development » software development
technologies dis » technologies dans, technologies de, technologies bit
information cash » information case, information cause, information can
dis information » mis information, aids information, des informations
model trade » modern trade, model traem, model tree
cash does » cash down

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies dis information cash does risk communication model trade development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies dis information cash does risk communication model trade development _ afrique.*.