Perhaps you should try some spelling variations:
case development » care development, based development, scale development
technology 3.1 » technology 1, technology 2.2, technology _
creation rates » taxation rates, graduation rates, protection rates
3.1 creation » 3.2 creation, 3.4 creation, 3.3.1 creation
costs case » costs cash
fr e » fur e, dr e, f e
r e » dr e

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 3.1 creation rates ((fr e) OR (r e)) communication costs case development 1 africa.~".
• Adding a wildcard symbol may retrieve word variants: technology 3.1 creation rates ((fr e) OR (r e)) communication costs case development 1 africa.*.