Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
developments after » development chapter, development center, developments from
path developments » path development, past developments, rate developments
pt communication » put communication, et communication, post communication
relations 6.3.2 » relations 6.3.1, relations 2.3.2, relations 3.3.2
technology et » technology e, technology ecit, technology eimt
et relations » des relations, 3 relations, ethnic relations
6.3.2 crisis » 13.2 crisis, 2.2.2 crisis, 2.3.1 crisis
after aortic » after abortion, acute aortic, after art
crisis pt » crisis _, crisis a
cost path » cost data, cost push, fast path

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

• Adding a wildcard symbol may retrieve word variants: technology et relations 6.3.2 crisis pt communication cost path developments after aortic.*.