Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
chet duoc » che duoc, cho duoc, che quoc
cua tre » cua te, cuu tre, dua tren
va hanh » van hanh, va thanh, va danh
duoc va » nuoc va, duc va, duoc ma
ve chet » ve chat, ve che, se chet
te sach » toc sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v ((nang xa) or (lang xa)) hoi. hieu ve chet duoc va hanh vi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v ((nang xa) OR (lang xa)) hoi. hieu ve chet duoc va hanh vi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach v ((nang xa) or (lang xa)) hoi. hieu ve chet duoc va hanh vi ((cua tre) or (cua triet))*.