Perhaps you should try some spelling variations:
communication present » communication event, communication patient, communication elements
3.1 communication » 3.1 communications, 3.2 communication, 3.5 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 a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
present clean » present nuclear, present green, present le
rates africa » state africa
17.2 go » 17.2 do, 17.2 sago, 17.2 how
go 3.1 » ago 3.1, do 3.1, go 3.2

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

• Adding a wildcard symbol may retrieve word variants: technologies a information 17.2 go 3.1 communication present clean development rates africa.*.