Perhaps you should try some spelling variations:
touch communication » trough communication, truth communication, through communication
communication cost » communication costs, communication costa, communications costs
development center » development case
technology trade » technology trends, technology transfer, technology transfers
trade relations » trade regulation
per development » power development, spur development, oer developments
center series » century series, gender series, center studies
relations do » relations du, relations das, relations der
rates touch » rates through
do rates » dose rates, des rates, do states

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

• Adding a wildcard symbol may retrieve word variants: technology trade relations do rates touch communication cost per development center series.*.