Perhaps you should try some spelling variations:
xiaodong huang » xiaotong zhang
huang china » hang china, tuan china, huang chang
yang jing » wang jing, yang jin, huang jing
hong hong » hong kong, hong jong, hong ng
hong than » hong tan, long thanh, hong hai
yang eng » yang yang, tan eng

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: ((wing OR wan) OR lang) xiaodong huang china ((yang eng) OR (yang jing)) hong hong than ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wing or wan) or lang) xiaodong huang china ((yang eng) OR (yang jing)) hong hong than ;~".
• Adding a wildcard symbol may retrieve word variants: ((wing or wan) or lang) xiaodong huang china ((yang eng) OR (yang jing)) hong hong than ;*.