Perhaps you should try some spelling variations:
models communication » modern communication, modeling communication, modern communications
communication cost » communication costs, communication costa, communications costs
developing centers » development centers, developing clusters, developing contexts
tradition 10.2 » tradition 1.2.2, tradition 3.2, tradition 1.3
crises models » crises model, crisis models, crisis model
technology 1 » technology _
4 developing » 3 developing
centers help » centers hold, centers real
1 tradition » _ tradition, a tradition, 4 tradition
10.2 crises » 10.2 crisis, 10.2 cases
cost 4 » cost _, cost 2.4

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

• Adding a wildcard symbol may retrieve word variants: technology 1 tradition 10.2 crises models communication cost 4 developing centers help.*.