Perhaps you should try some spelling variations:
transport crisis » transform crisis, transport costs, transfer crisis
hough transport » through transport, high transport, hough transform
transform tvdft » transform fft, transform test
12 leaders » 1 leaders, g20 leaders, _ leaders
guias 12 » guias de
aguas de » aguas del, aguas do, vagues de
de hough » _ hough
crisis a » crisis _

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 12 leaders transform tvdft based ) OR ( aguas de hough transport crisis a ))~.
• Adding a wildcard symbol may retrieve word variants: (( guias 12 leaders transform tvdft based ) or ( aguas de hough transport crisis a ))*.