Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
oral communication » personal communication
2.4 development » 2.3 development, 2.1 development, 2.2 development
development can » development case, development co, development canada
technologies 3 » technologies _, technologies 4, technologies 2
3 information » 1 information
can africa » urban africa
iii 3 » iii _, iii 1, ii 3
iii 2 » iii _, ii 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 3 information ((iii 3) OR (iii 2)) oral communication cost 2.4 development can africa.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 3 information ((iii 3) OR (iii 2)) oral communication cost 2.4 development can africa.".
• Adding a wildcard symbol may retrieve word variants: technologies 3 information ((iii 3) OR (iii 2)) oral communication cost 2.4 development can africa.*.