Perhaps you should try some spelling variations:
data communication » data communications
models development » model development, module development, model developments
development phase » development phases, development case, development plans
relations under » relations united, equations under, obligations under
costs models » cost models, cost model, potts models
under ozone » under one, undergo one
ozone data » phone data
phase des » phasen des, phase der

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

• Adding a wildcard symbol may retrieve word variants: technology _ relations under ozone data communication costs models development phase des.*.