Perhaps you should try some spelling variations:
john mchale » john michael, john charles
stern john » stern jon, stein john, stern joel
dang hadi » dang hai
yang jie » yang jin, yang jui, yang yi
yu chen » yu cheng, yi chen, yulu chen
yang li » yang lin, yang yi, tang li
yang xi » yang yi, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: stern john mchale yu chen ((((yang li) or (yang jie))) or (((yang di) or (yang xi)))) dang hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: stern john mchale yu chen ((((yang li) OR (yang jie))) OR (((yang di) OR (yang xi)))) dang hadi ;.
• Adding a wildcard symbol may retrieve word variants: stern john mchale yu chen ((((yang li) or (yang jie))) or (((yang di) or (yang xi)))) dang hadi ;*.