Perhaps you should try some spelling variations:
6.1 communication » 4.1 communication, 1.1 communication, 3.1 communication
information a » information age, information about
3 development » 2 development
technology 1 » technology _
debate 6.1 » debate 2.1, debate 1, debate 4.2
a debate » _ debate, a debattre, el debate
a africa » 1 africa, can africa, em africa
costs 3 » costs _, costs 4, costs a

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology 1 information a debate 6.1 communication costs 3 development a africa.~.
• Adding a wildcard symbol may retrieve word variants: technology 1 information a debate 6.1 communication costs 3 development a africa.*.