Perhaps you should try some spelling variations:
data communication » data communications
have development » phase development, leave development, valve development
technologies 4 » technologies _
information 12 » information 1.2, information 2, information 1
4 information » 2 information, 1 information
africa second » africa beyond
efforts have » reforms have, efforts acd, efforts data
13 data » 1.3 data, 3 data, 1 data
12 13 » 12 15, 12 14, 11 13

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 4 information 12 13 data communication efforts have development africa second.~.
• Adding a wildcard symbol may retrieve word variants: technologies 4 information 12 13 data communication efforts have development africa second.*.