Perhaps you should try some spelling variations:
communication models » communication modes, communication mode, communication mediums
gap information » can information, care information, bank information
technology gap » technology park, technology _, technology ict
information et » information act, information _, information need
development a » development _, development bank, development banks
et does » der does

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology gap information et does mobile communication models _ development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology gap information et does mobile communication models _ development a afrique.*.