Perhaps you should try some spelling variations:
communication system » communication systems, telecommunication system, communication series
oral communication » personal communication
peru's development » eu's development, person development, pme's development
development banks » development bank
information pt » information part, information 1, information 1.2
system peru's » system period, system plus
banks africa » bank's africa, bank africa, bank african
do oral » do rural, who oral
pt do » pt d, pt bo

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 pt do oral communication system peru's development banks africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information pt do oral communication system peru's development banks africa.*.