Perhaps you should try some spelling variations:
communication short » communication sherry, communication set, communication sur
debt communication » de communication, et communication, get communication
development aid » development a, development africa, development agenda
technology 2.2 » technology _, technology 1, technology 3
2.2 relations » 1.2 relations, 2.4 relations, 2.2 relational
relations 2.1 » relations 3.1, relations 1, relations _
short sector » short vector, port sector, export sector
crisis debt » crisis del, crisis best, crisis de
2.1 crisis » 3.1 crisis, 2010 crisis, 2011 crisis

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 relations 2.1 crisis debt communication short sector development aid aortic.*.