Perhaps you should try some spelling variations:
sector developments » sector development, recent developments
communication cost » communication costs, communication costa, communications costs
pt communication » put communication, et communication, post communication
relations 3.6.5 » relations 2.6.1, relations 2.6.2, relations 3.3.2
technology set » technology sector, technology 1, technology 2.2
developments 3 » developments _, developments 4, developments pt
set relations » et relations, des relations, eu relations
3.6.5 crisis » 3.5.4 crisis, 13.2.2 crisis, 3.1 crisis
cost sector » cost vector, port sector, forest sector
crisis pt » crisis _, crisis a
3 aortic » _ aortic, 3 acetic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technology set relations 3.6.5 crisis pt communication cost sector developments 3 aortic.*.