Perhaps you should try some spelling variations:
yang liang » wang liang, yan liang, yang yang
van hoang » tran hoang, vu hoang, anh hoang
hoang shu » hoang vu, cong shu, hoang sy
wang lin » wang li, wang qin, yang lin
di trana » bi trans
ii trans » bi trans, ii trends, a trans
wan yan » wang yan, nan yan, wai yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan ((wang lin) or (yang liang)) ((di trana) OR (ii trans)) van hoang shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan ((wang lin) OR (yang liang)) ((di trana) OR (ii trans)) van hoang shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan ((wang lin) or (yang liang)) ((di trana) OR (ii trans)) van hoang shu ;*".