Perhaps you should try some spelling variations:
data communication » data communications
development manuel » developpement manuel, development model, development master
information does » information der, information due, information duties
4 development » 2 development, 4 developing
does debt » does de
costs 4 » costs _, costs a, costs 4.2

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 does debt data communication costs 4 development manuel afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information does debt data communication costs 4 development manuel afrique.*.