Perhaps you should try some spelling variations:
wage comprehension » wage compression, la comprehension, math comprehension
comprehension 6.5 » comprehension 5.5, comprehension 6.2, comprehension 6.3
l2 developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
technologies 4 » technologies _
4 information » 2 information, 1 information
information 3 » information 2
el wage » real wage, net wage, per wage
6.5 l2 » 5.5 l2, 6.5 l1, 6.5 la
3 el » _ el, y el

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 3 el wage comprehension 6.5 l2 developpement en afrique.*.