Perhaps you should try some spelling variations:
modern developments » model development, power developments, major developments
true communication » truth communication, time communication, stroke communication
developments from » development from, developments after, developments _
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
21st regulation » past regulation, pest regulation, post regulation
regulation a » regulation _
costs modern » costs money, texts modern
primes true » crime true
a primes » a primers, a primer, a prime
from de » from dem, from deep

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

• Adding a wildcard symbol may retrieve word variants: technology 21st regulation a primes true communication costs modern developments from de.*.