Perhaps you should try some spelling variations:
child development » world development
pt communication » put communication, et communication, post communication
technology law » technology 1, technology 2.2, technology 3
law relation » la relation, law regulation, law relating
relation 4.5 » relation 4.3, relations 4.3, relation 5.3
africa april » america april, africa anil, africa africa
costs child » costs china
4.5 crisis » 2.5 crisis, 4 crisis, 2.1 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 law relation 4.5 crisis pt communication costs child development africa april.*.