Perhaps you should try some spelling variations:
13.1 communication » 1.1 communication, 3.1 communication, 3.2 communication
vote developpement » de developpement, le developpement, et developpement
communication can » communication canada, communication china, communication 3
developpement la » developpement de, developpement et, developpement du
technology 3 » technology _, technology 1, technology 4
3 inflation » _ inflation, 2 inflation, 6 inflation
la afrique » l afrique, la fabrique, en afrique
rate rule » rate rules, trade rule
rule 13.1 » rule 14.1, rule 3.1, rule 13.3.1
can vote » dans vote, a vote, can both

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

• Adding a wildcard symbol may retrieve word variants: technology 3 inflation rate rule 13.1 communication can vote developpement la afrique.*.