Perhaps you should try some spelling variations:
informal transfer » informal transfers, informal transport, information transfer
transfer systems » transport systems, transit systems
formal transfer » informal transfers, social transfer, fiscal transfer
transfer fee » transfer fees, transfer der, transfer from
de informal » do informal, _ informal, 3 informal
systems can » systems case
vagues de » vague de, values de, langues de
do formal » so formal, do informal, does formal
aguas do » aguas de, aguas del
macao » macro, macau, cacao

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vagues de informal transfer systems can ) or ( aguas do formal transfer fee macao ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vagues de informal transfer systems can ) OR ( aguas do formal transfer fee macao ))*.