Perhaps you should try some spelling variations:
communication fast » communication fifth, communication from, communication five
man development » can development, human development, plan development
informal out » informal oath, informal output, informal group
due debt » does debt, pure debt, run debt
fast man » last man, fast can, fast lane
due et » due east

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology from informal out ((due et) OR (due debt)) communication fast man development 1 africa.~".
• Adding a wildcard symbol may retrieve word variants: technology from informal out ((due et) OR (due debt)) communication fast man development 1 africa.*.