Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
transition based » translation based, transition case, tradition based
sme development » trade development
development des » development does, development desd, development ds
technology 4ir » technology 4, technology 4.1, technology 4.2
4ir transition » 4 transition, 4.1 transition, die transition
des afrique » en afrique, de l'afrique
based rice » based price, based rise, based ridge
costs sme » costs some, costs amy
rice 4.1 » rice 2.1, rice 3.1, rice 1

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

• Adding a wildcard symbol may retrieve word variants: technology 4ir transition based rice 4.1 communication costs sme development des afrique.*.