Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
hoang seo » hong seo
wang yong » wang hyoung, wang yan, wang shiyong
sang linh » sang minh, song lina, wang lin
test sang » test salt, test sat
hoang sy » hoang vu
yi hua » li hua, ya hua, ying hua
yi hui » li hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (wang yong)) ((yi hua) or (yi hui)) test sang linh ((hoang seo) OR (hoang sy)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (wang yong)) ((yi hua) OR (yi hui)) test sang linh ((hoang seo) OR (hoang sy)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (wang yong)) ((yi hua) or (yi hui)) test sang linh ((hoang seo) OR (hoang sy)) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang yong)) ((yi hua) or (yi hui)) test sang linh ((hoang seo) OR (hoang sy)) ;*.