Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
basis development » basin development, based development, busines development
radiation status » graduation status, hydration status, radiation storms
technology 8.3 » technology 2.3, technology 3.3, technology 1.3
8.3 radiation » 3.3 radiation, 8.2.3 radiation, 8.3.4 radiation
cost basis » post basic, cost based, cost base
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 8.3 radiation status ((fr e) OR (r e)) communication cost basis development 1 africa.~".
• Adding a wildcard symbol may retrieve word variants: technology 8.3 radiation status ((fr e) OR (r e)) communication cost basis development 1 africa.*.