Perhaps you should try some spelling variations:
2.14 communication » 2.4 communication, 5.4 communication, 2.3 communication
technology trends » technology thesis, technology trade, technology tools
trends population » ties population, texas population, extremes population
population panel » population age, population based, population area
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
la afrique » l afrique, la fabrique, en afrique
panel fig » panel firm, panel i, panel ii
fig 2.14 » fig 2.1, fig 2.4, fig 2.15
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology trends population panel fig 2.14 communication costs 4 developpement la afrique.*.