Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van lam » van nam
duoc va » nuoc va, duc va, duoc ma
va dinh » van dinh, va kinh, va tinh
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
te sai » te bai, te lai, te hai
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sai) or (te tai)) ky lang xa hoi. hieu van lam duoc va dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sai) OR (te tai)) ky lang xa hoi. hieu van lam duoc va dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sai) or (te tai)) ky lang xa hoi. hieu van lam duoc va dinh vi cua tre*.