Perhaps you should try some spelling variations:
6.2.4.1 communication » 6.2.4.2 communication, 6.2.4.3 communication, 11.4.1 communication
developpement 12 » developpement 1.4, developpement de, developpement et
a developpement » au developpement, de developpement, le developpement
technology tax » technology than, technology trap, technology tpm
tax population » farm population, fast population, boar population
population per » population panel, population p230, population area
firm 6.2.4.1 » firma 2.4.1
12 matrices » 2 matrices, _ matrices, 2.3 matrices
per firm » per form, pr firm, payer firm
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology tax population per firm 6.2.4.1 communication costs a developpement 12 matrices.*.