Perhaps you should try some spelling variations:
case transfers » cash transfers, based transfers, cash transfer's
sea transport » road transport, bus transport
signal 4 » signal _, signal 6, signal a
signal 3 » signals 3, signal _, signal 6
own sea » own ses, own seed, own real
guias 3 » guias de
agus » angus, aus, ages

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: (( agus own sea transport ((signal 4) OR (signal 3)) ) OR ( guias 3 case transfers _ cas ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( agus own sea transport ((signal 4) OR (signal 3)) ) or ( guias 3 case transfers _ cas ))~".
• Adding a wildcard symbol may retrieve word variants: (( agus own sea transport ((signal 4) OR (signal 3)) ) or ( guias 3 case transfers _ cas ))*.