Perhaps you should try some spelling variations:
china's transport » africa's transport, india's transport
transport system » transport sector
dan china's » can china's, did china's, sen china's
aguas dan » aguas de, aguas del, aguas do
de carl » des carl, dr carl, de cara
de car » de cara, de care, de cas

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: (( gua ((de car) OR (de carl)) transport system a ) OR ( aguas dan china's transport _ cacao ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( gua ((de car) OR (de carl)) transport system a ) or ( aguas dan china's transport _ cacao ))~".
• Adding a wildcard symbol may retrieve word variants: (( gua ((de car) OR (de carl)) transport system a ) or ( aguas dan china's transport _ cacao ))*.