Perhaps you should try some spelling variations:
9.4.1 communication » 3.4.1 communication, 11.4.1 communication, 3.4.2 communication
development planes » development plans, development players, development plan
drive development » driven development, rice development, river development
technology over » technology never, technology other, technology one
section state » reaction state, question state, nation state
over section » river section, order section, over reaction
state policy » rate policy, state policies, trade policy
policy 9.4.1 » policy 3.4.1, policy 8.4.1, policy 9.3.1
costs drive » costs drivers, cost driven, costs driving
planes 4 » planes _, planes 5, planes c

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

• Adding a wildcard symbol may retrieve word variants: technology over section state policy 9.4.1 communication costs drive development planes 4.*.