Perhaps you should try some spelling variations:
xiaodong huang » xiaotong zhang
xiaodong wang » xiaotong zhang, xiaobo wang, xiaoyang tang
change coping » change scoping, change mowing, change comparing
zhong zhi » zhang zhi, zhong tai
can when » can women, can we, can win
hong ghi » hong g, hong hai

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 ((xiaodong wang) OR (xiaodong huang)) can when change coping ((hong ghi) OR (zhong zhi)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((xiaodong wang) OR (xiaodong huang)) can when change coping ((hong ghi) or (zhong zhi)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((xiaodong wang) OR (xiaodong huang)) can when change coping ((hong ghi) or (zhong zhi)) ;*.