Perhaps you should try some spelling variations:
population concerns » population centers, population conference, population center
communication code » communications code, communication cote, communication mode
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
technology 5.33 » technology 5.3, technology 5.3.1, technology 2.3
5.33 population » 4.3.3 population, 5.3.1 population, 2.3 population
d developpement » de developpement, du developpement, le developpement
developpement l » developpement il, developpement la, developpement de
concerns pre » concerns core, concerns pt, concerns from
l afrique » en afrique
pre 3.1 » care 3.1
code d » code de, code _, code 2

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

• Adding a wildcard symbol may retrieve word variants: technology 5.33 population concerns pre 3.1 communication code d developpement l afrique.*.