Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
trade development » software development
technology right » technology rights, technology high, technology rich
right infection » right insertion, right intention, right direction
infection data » infection rate, infection rates, section data
development la » development law, development li, development land
costs trade » costly trade
la afrique » l afrique, la fabrique, en afrique
data base » data based
base 3.2 » case 3.2, base 3.1, base 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology right infection data base 3.2 communication costs trade development la afrique.*.