Perhaps you should try some spelling variations:
mexico paving » mexico pricing, mexico during, mexico david
mexico basin » mexico basel, mexico brazil, mexico case
risk along » risk among, ask along
wang yang » wang yan, wang liang, wang yanling
risk song » risk among, risk some, risk scoring
yang big » yang jing, yang di, yang xi
big bend » big end, big brand, big bang

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: wang yang big bend ((mexico paving) OR (mexico basin)) ((risk song) OR (risk along)) thin ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang big bend ((mexico paving) OR (mexico basin)) ((risk song) or (risk along)) thin ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang big bend ((mexico paving) OR (mexico basin)) ((risk song) or (risk along)) thin ;*.