Perhaps you should try some spelling variations:
social communication » oral communication, digital communication, visual communication
series function » services functions, service function, versus function
2.3 development » 2 development, 2015 development, 1 development
function bias » truncation bias, function based, function a
development 6 » development 1, development 2.1
6 americans » _ americans, x americans, do americans
non social » von social, union social, can social
costs 2.3 » costs 4.2, costs 4.4

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

• Adding a wildcard symbol may retrieve word variants: technology series function bias non social communication costs 2.3 development 6 americans.*.