Perhaps you should try some spelling variations:
china's transport » africa's transport, india's transport
transport did » transport air, transport du, transport de
how china's » from china's
transport a » transport data
aguas how » aguas do
aguas use » gas use, aguas de
use water » unsafe water
did a » did _, did i, aid a

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: (( aguas how china's transport did a ) OR ( aguas use water ((transport a) OR (transport _)) co ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( aguas how china's transport did a ) or ( aguas use water ((transport a) OR (transport _)) co ))~".
• Adding a wildcard symbol may retrieve word variants: (( aguas how china's transport did a ) or ( aguas use water ((transport a) OR (transport _)) co ))*.