Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dam thuc » am thuc, dan thuc, dai thuc
nam thuc » nam thuoc, am thuc, nam thu
va triet » va thiet, va trien, ve triet
so sach » so sanh, bo sach, co sach
lang xa » lang ha, dang xay, lang van
cam tuc » cam xuc, cam tu, nam truc
va hanh » van hanh, va thanh, va danh
y lang » o lang, _ lang, tay 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 xa hoi. hieu van ((((cam tuc) OR (dam thuc))) OR (nam thuc)) va hanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y lang xa hoi. hieu van ((((cam tuc) OR (dam thuc))) or (nam thuc)) va hanh vi va triet~".
• Adding a wildcard symbol may retrieve word variants: so sach y lang xa hoi. hieu van ((((cam tuc) OR (dam thuc))) or (nam thuc)) va hanh vi va triet*.