Perhaps you should try some spelling variations:
1973 communication » 13 communication, 1.3 communication, 19 communication
au developpement » du developpement, de developpement, le developpement
technology 4ir » technology 4, technology 4.1, technology 4.2
4ir inflation » der inflation, die inflation, aid inflation
des afrique » en afrique, de l'afrique
costs au » costs a, costs amy, costs _
rate » rates

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

• Adding a wildcard symbol may retrieve word variants: technology 4ir inflation rate swaps 1973 communication costs au developpement des afrique.*.