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
development case » development china
technology 4 » technology _, technology 1, technology 3
relations ac » relations act, relations a, relations au
4 relations » 3 relations, 4 relation, 1 relations
cost models » cost model, logit models
loss data » loss rate
case data » cases data, base data, use data
ac loss » a loss, ac losses, macd loss

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

• Adding a wildcard symbol may retrieve word variants: technology 4 relations ac loss data communication cost models development case data.*.