Perhaps you should try some spelling variations:
13.3 communication » 1.3 communication, 3.3 communication, 13.3.9 communication
information korea » information bureau, information format, information stored
developing across » developing cross, development across, developing areas
r information » hr information, der information, fur information
korea debates » key debates, great debates, moral debates
technology r » technology 1, technology 3, technology 4
debates 13.3 » debates 10.3, debates 1.3, debates 12.3
4 developing » 3 developing
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 r information korea debates 13.3 communication costs 4 developing across africa.*.