Perhaps you should try some spelling variations:
cheng wei » cheng hei, cheng siwei, zhang wei
shang hai » shang kai, dang hai, chang ha
chen wei » zhen wei, chen e
yang jie » yang jin, yang di, yang yi
yang jui » yang judy, yang di, yang yi
tin can » tin tan
yang xi » yang di, yang yi

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: tin can ((cheng wei) OR (chen wei)) chen ((((yang jie) OR (yang jui))) OR (yang xi)) shang hai ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tin can ((cheng wei) OR (chen wei)) chen ((((yang jie) or (yang jui))) or (yang xi)) shang hai ;~".
• Adding a wildcard symbol may retrieve word variants: tin can ((cheng wei) OR (chen wei)) chen ((((yang jie) or (yang jui))) or (yang xi)) shang hai ;*.