Perhaps you should try some spelling variations:
development case » development china
its development » gas development, skills development, editions development
technology 4 » technology _, technology 1, technology 3
relation 5g » relation 5.3, relation 5.4, relation _
4 relation » _ relation, 5 relation, 2 relation
africa eu » africa eiu, africa 1, africa 3
costs its » costs ii, costs iii
africa 4 » africa _, africa a, africa 1
case das » case des, case case, case data

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 4 relation 5g ((africa eu) OR (africa 4)) communication costs its development case das.~".
• Adding a wildcard symbol may retrieve word variants: technology 4 relation 5g ((africa eu) OR (africa 4)) communication costs its development case das.*.