Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
data communication » data communications
models development » model development, module development, model developments
relations under » relations united, equations under, obligations under
technology 2.2 » technology _, technology 1, technology 3
2.2 relations » 1.2 relations, 2.4 relations, 2.2 relational
cost models » cost model, logit models
china dank » china data, china den, china daqing
under one » under age
one data » phone data, ozone data, core data

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 relations under one data communication cost models development china dank.*.