Perhaps you should try some spelling variations:
6.2.4.2 communication » 6.2.4.1 communication, 6.2.4.3 communication, 3.2.3.2 communication
au developpement » du developpement, de developpement, le developpement
developpement la » developpement de, developpement et, developpement du
technology tax » technology than, technology trap, technology tpm
tax population » farm population, fast population, boar population
population per » population panel, population p230, population area
la matrices » la matrice, _ matrices, 12 matrices
costs au » costs a, costs amy, costs _
per fig » per firm

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 fig 6.2.4.2 communication costs au developpement la matrices.*.