Perhaps you should try some spelling variations:
clear development » clean development, clean developoment, car development
technology shock » technology shocks, technology social, technology study
private business » estate business
development case » development china
shock relations » work relations, shot relation, shock simulations
community costs » community counts, community forests, community crisis
relations 1.2 » relations 3.2, relations 1.1, relations 5.2
1.2 private » 1.7 private, 12 private, 5.2 private
case car » case case, case c

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

• Adding a wildcard symbol may retrieve word variants: technology shock relations 1.2 private business community costs clear development case car.*.