Perhaps you should try some spelling variations:
oral communication » personal communication
technologies math » technologies may, technologies a, technologies art
development urban » development bank, development band, development update
math information » catch information, much information, health information
information case » information based, information can, information costs
urban africa » urban area
case new » use new
new oral » new moral, knew moral, new rural

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies math information case new oral communication costs _ development urban africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies math information case new oral communication costs _ development urban africa.*.