Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
technology gap » technology 1, technology 2.2, technology 3
inflation good » inflation gopi, inflation gerold, inflation gross
gap inflation » has inflation, grade inflation, rapid inflation
la afrique » l afrique, la fabrique, en afrique
good rice » good price, good rich, goods price
rice 2.1 » rice 3.1, rice 4.1, rice 1
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology gap inflation good rice 2.1 communication costs 4 developpement la afrique.*.