Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
te bai » te bao, te tai, te ban
bai ky » ban ky, sai ky, bac ky
xuc va » duc va, tuc va, luc va
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 bai ky lang xa hoi. hieu van nam ((xuc va) or (tuc xa)) dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te bai ky lang xa hoi. hieu van nam ((xuc va) OR (tuc xa)) dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te bai ky lang xa hoi. hieu van nam ((xuc va) or (tuc xa)) dinh vi cua tre*.