Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty ((nang xa) or (nang ma)) hoi. ((hieu ve) or (hieu qua)) cam duc va hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (hieu qua)) cam duc va hanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: so sach ty ((nang xa) or (nang ma)) hoi. ((hieu ve) or (hieu qua)) cam duc va hanh vi va triet*.