Perhaps you should try some spelling variations:
technologies 2.1 » technologies _, technologies 4, technologies a
information case » information based, information can, information costs
de communication » mobile communication, online communication
2.1 information » 3.1 information
developed notes » development notes, developed cities, developed after
4.5 developed » 4.5 developer, 14.4 developed, 2.0 developed
costs 4.5 » costs 4.2, costs 4.4, costs 3.5
case im » case i, case ii, case iv
im de » tim de, wim de, ii de
selected. » detected.

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information case im de communication costs 4.5 developed notes selected.*.