Perhaps you should try some spelling variations:
tender congo » trade congo
trade hong » trade among
wang yang » wang yan, wang liang, wang yanling
trade how » trade show, trade shows
yang fan » zhang fan, yang dean, yang yang
can one » than one, can only
fan a » fang a, can a, fan _

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 fan a ((tender congo) OR (((trade hong) OR (trade how)))) can one sur ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang fan a ((tender congo) or (((trade hong) OR (trade how)))) can one sur ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang fan a ((tender congo) or (((trade hong) OR (trade how)))) can one sur ;*.