Perhaps you should try some spelling variations:
wang ying » wang yang, wang yong, wang jing
ying yang » yang yang, yin yang, ying chang
hong hong » hong kong, hong jong, how hong
3.1 best » 3.1 test, 3.2 best, 3.3 best
yong suk » chong suk, cong sun, rong su
x1 best » 11 best
hong ng » hong kong, hong jong
1 best » 3 best, 4 best, 2 best

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 ying yang ((((x1 best) OR (3.1 best))) OR (1 best)) ((hong hong) OR (hong ng)) yong suk ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ying yang ((((x1 best) OR (3.1 best))) or (1 best)) ((hong hong) or (hong ng)) yong suk ;~".
• Adding a wildcard symbol may retrieve word variants: wang ying yang ((((x1 best) OR (3.1 best))) or (1 best)) ((hong hong) or (hong ng)) yong suk ;*.