Perhaps you should try some spelling variations:
employment estimates » development estimates, employment activities, employment rates
oral communication » personal communication
estimates africa » estate africa, estimates from, estimates across
technologies 2 » technologies _, technologies 4
2.3 employment » 2.9 employment, 3.3 employment, 2.3 unemployment
information a » information age, information about
knew oral » knew moral, new oral, new moral
costs 2.3 » costs 4.2, costs 4.4
a knew » a know, i knew

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 2 information a knew oral communication costs 2.3 employment estimates africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies 2 information a knew oral communication costs 2.3 employment estimates africa.*.