Perhaps you should try some spelling variations:
center development » centered development, centred development, gender development
true communication » truth communication, time communication, stroke communication
development planes » development plans, development players, development plan
technology et » technology e, technology ecit, technology eimt
et relations » des relations, 3 relations, ethnic relations
costs center » cost center, cost centers, costs peter
planes c » planes _, planes 4, planes 5
2.5 6 » 2.5 _, 2.5 a, 2.0 6
1.5 6 » 1.5 _, 1.5 a, 1.5 c

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technology et relations ((2.5 6) OR (1.5 6)) true communication costs center development planes c.~".
• Adding a wildcard symbol may retrieve word variants: technology et relations ((2.5 6) OR (1.5 6)) true communication costs center development planes c.*.