Perhaps you should try some spelling variations:
dong hoang » hong hong
chen ying » chen yang, chen ping, chen jing
john song » john wong, john bonn, john ngosong
jin song » jie song, kim song, jin ying
a chen » ta chen, _ chen, n chen
ye a » yet a, e a, me a
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((wang yan) or (dong hoang))) or (dong sin)) ye a chen ying ((jin song) OR (john song)) w ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang yan) OR (dong hoang))) OR (dong sin)) ye a chen ying ((jin song) OR (john song)) w ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang yan) or (dong hoang))) or (dong sin)) ye a chen ying ((jin song) OR (john song)) w ;*".