Perhaps you should try some spelling variations:
communications code » communication mode, communications case, communications models
rural development » social development
4 communications » 14 communications, 4 communication, 2 communications
information 1.2 » information 1.5.2, information 2
china africa » cpia africa, china asia
code rural » exode rural, monde rural, code real
1.2 r » 1.2 _, 1.2 a
r 4 » nr 4

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 1.2 r 4 communications code rural development china africa.*.