Perhaps you should try some spelling variations:
development matter » development matters, development master, development pattern
china development » china's development, child development, mena development
pt communication » put communication, et communication, post communication
matter abortion » after abortion, matter partition
relations 1.2 » relations 3.2, relations 1.1, relations 5.2
1.2 crisis » 10.2 crisis, 13.2 crisis, 15.2 crisis
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 _ relations 1.2 crisis pt communication costs china development matter abortion.*.