Perhaps you should try some spelling variations:
formation across » information across, variation across, variations across
la communication » data communication, data communications
de developpement » sme development
developpement il » developpement de, developpement et, developpement du
across time » across firms
il afrique » l afrique, en afrique
costs de » costs _, costs 4, costs a
time la » time lag, time a, time lags

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

• Adding a wildcard symbol may retrieve word variants: technology _ formation across time la communication costs de developpement il afrique.*.