Perhaps you should try some spelling variations:
river transport » air transport, water transport, private transport
language valta » language data, language arts, language area
food transfer » food transfers, funds transfer
transfer file » transfer fee, transfer from, transfer fees
transport zen » transport can, transport de, transport iran
file across » fire across, life across, time across
valta river » volta river, warta river, value driver
und food » under food, kind food, und fonds
zen code » zen coda, open code, der code

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( (ideal OR idea) und food transfer file across ) OR ( language valta river transport zen code ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (ideal OR idea) und food transfer file across ) or ( language valta river transport zen code ))~".
• Adding a wildcard symbol may retrieve word variants: (( (ideal OR idea) und food transfer file across ) or ( language valta river transport zen code ))*.