Perhaps you should try some spelling variations:
modern developments » model development, power developments, major developments
month communication » mouth communications, south communications, touch communication
developments from » development from, developments after, developments _
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
4.2 relation » 3.2 relation, 4.2 correlation, 5.2 relational
costs modern » costs money, texts modern
relation c » relation _, relation a, relation 1
from dar » from day, from dr, from data
c prime » co prime, 1 prime, _ prime

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

• Adding a wildcard symbol may retrieve word variants: technology 4.2 relation c prime month communication costs modern developments from dar.*.