Perhaps you should try some spelling variations:
de transport » sea transport, free transport, bus transport
transport en » transport et, transport can, transport _
guias case » grids case
case heat » case heart, case health, waste heat
en costa » can costa, en contra, _ costa
sur a » sgr a, sul a, sur l
de de » e de, de ce, de se

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: (( guias case heat transfer ((sur a) OR (sur la)) ) OR ( guia de de transport en costa ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( guias case heat transfer ((sur a) OR (sur la)) ) or ( guia de de transport en costa ))~".
• Adding a wildcard symbol may retrieve word variants: (( guias case heat transfer ((sur a) OR (sur la)) ) or ( guia de de transport en costa ))*.