Perhaps you should try some spelling variations:
communication paper » communication power, communication pattern, communication partner
transfer infection » transfer innovation, transfer function, transfer reduction
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
des development » does development, ides development, dams development
infection safe » infection rate, injection safety, infection rates
safe space » safe spaces, state space, space space
space 2.2 » space 2.1, space 3.2, space 3.3
paper des » paper d, paper e, paper ten
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technology transfer infection safe space 2.2 communication paper des development 1 afrique.*.