Perhaps you should try some spelling variations:
communication present » communication event, communication patient, communication elements
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
clean development » human development, urban development
development rates » development rate, development notes, development water
information 17.2 » information 1.2, information 15.2, information 11.2
technologies 2 » technologies _, technologies 4
present clean » present nuclear, present green, present le
rates africa » state africa
17.2 do » 17.2 how
do 3.5 » de 3.5, do 3.1, do 3.5.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 17.2 do 3.5 communication present clean development rates africa.*.