Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
la developpement » le developpement, de developpement, et developpement
technology 4.1 » technology 3.1, technology 2.1, technology 1
4.1 inflation » 5.4.1 inflation, 2.3 inflation, 3.2 inflation
inflation tax » inflation rate, inflation _, inflation target
tax sources » 3a sources, data sources, east sources
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 inflation tax sources 3.2 communication _ la developpement des afrique.*.