Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
van hanh » van thanh, ban hanh, van anh
tay lang » tai lang, tay tang, tay quang
nam thuc » nam thuoc, am thuc, nam thu
hieu van » hieu va, thien van, lieu va
cam tuc » cam xuc, cam tu, dam thuc
so sach » so sanh, bo sach, co sach
y lang » o lang, _ lang, yen lang
vi va » vi van, vai va, vu va

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: so sach ((y lang) OR (tay lang)) xa hoi. hieu van ((cam tuc) OR (nam thuc)) van hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y lang) OR (tay lang)) xa hoi. hieu van ((cam tuc) or (nam thuc)) van hanh vi va triet~".
• Adding a wildcard symbol may retrieve word variants: so sach ((y lang) OR (tay lang)) xa hoi. hieu van ((cam tuc) or (nam thuc)) van hanh vi va triet*.