Perhaps you should try some spelling variations:
chinese development » china's development, china development, business development
del communication » cell communication, real communication, cell communications
development use » development using, development under, development unit
relations 1.1 » relations 2.1, relations 3.1, relations 5.1
costs chinese » bosses chinese, costs china, does chinese
technology 1 » technology _
use abortion » unsafe abortion, post abortion, safe abortion
1 relations » 3 relations, a relations, 1.2 relations
1.1 crisis » 11 crisis, 2.1 crisis, 3.1 crisis
crisis del » crisis desde

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

• Adding a wildcard symbol may retrieve word variants: technology 1 relations 1.1 crisis del communication costs chinese development use abortion.*.