Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
van cam » van nam, van lam, van cau
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 y ((nang ma) or (lang xa)) hoi. hieu van cam xuc va hanh vi ((cua tre) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang ma) OR (lang xa)) hoi. hieu van cam xuc va hanh vi ((cua tre) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang ma) or (lang xa)) hoi. hieu van cam xuc va hanh vi ((cua tre) or (va triet))*.