Perhaps you should try some spelling variations:
oral communication » personal communication
technologies debt » technologies de, technologies art, technologies bit
information needs » information networks
debt information » student information, credit information, budget information
development band » development bank, development banks
4 development » 2 development, 4 developing
band africa » bank africa, bank african, can africa
needs de » needs men, needs one, needs _
de oral » de otras, new oral
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 debt information needs de oral communication costs 4 development band africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies debt information needs de oral communication costs 4 development band africa.*.