Perhaps you should try some spelling variations:
transform force » transform fourier, transform cote, transform order
haar transform » can transform, data transform, make transform
transfer risks » transfer risk
mass transfer » cash transfer, basin transfer, mass transport
guias de » guia de, guide de, aguas de
aguas do » aguas de, aguas del
de haar » de haan, de haas, de hablar
force a » force _
do mass » does mass, low mass, how mass
risks a » risks _, risks 4, risks 3

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( guias de haar transform force a ) OR ( aguas do mass transfer risks a ))~".
• Adding a wildcard symbol may retrieve word variants: (( guias de haar transform force a ) OR ( aguas do mass transfer risks a ))*.