Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
models development » model development, module development, model developments
development case » development china
relations wider » relations under, relations der, relations after
technology can » technology change, technology 1, technology 2.2
can relations » can regulations, iran relations, canada relations
costs models » cost models, cost model, potts models
ozone data » phone data
case data » cases data, base data, use data

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

• Adding a wildcard symbol may retrieve word variants: technology can relations wider ozone data communications costs models development case data.*.