Perhaps you should try some spelling variations:
hieu thien » hieu hien, chieu chien, dieu khien
thien hach » thien thanh, hien hanh
lang van » dang van, tang van, hoang van
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
dau va » dau ve, lau va
vi cua » vai cua, di cua
cua te » cua tu
do va » do van, so va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang van hoi. hieu thien hach ((((do va) OR (tu va))) OR (dau va)) hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang van hoi. hieu thien hach ((((do va) or (tu va))) or (dau va)) hanh vi cua te*.