Perhaps you should try some spelling variations:
information ratio » information nation, information matrix, information section
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
tax information » 2 information, 1 information
technology tax » technology than, technology trap, technology tpm
4 developing » 3 developing
developing l » developing l2, developing _, developing a
l afrique » en afrique
ratio 6 » ratio _, ratio 2, ratio 9
costs 4 » costs _, costs a, costs 4.2
6 2.7 » 6 1.7, b 2.7, 6 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology tax information ratio 6 2.7 communication costs 4 developing l afrique.*.