Perhaps you should try some spelling variations:
development integral » development internal, development integrated, development intel
communication cost » communication costs, communication costa, communications costs
china development » china's development, child development, mena development
pt communication » put communication, et communication, post communication
integral action » integrated action, integree actions, integrals function
technology r » technology 1, technology 3, technology 4
relation 1.1 » relations 1.1, relation 9.1, relations 1.10
r relation » 2 relation, 4 relation, a relation
1.1 crisis » 11 crisis, 2.1 crisis, 3.1 crisis
cost china » costs china, east china, out china
crisis pt » crisis _, crisis a

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

• Adding a wildcard symbol may retrieve word variants: technology r relation 1.1 crisis pt communication cost china development integral action.*.