Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dang tay » dang xay, dung tay, dan tay
sach ty » sach y, sach thu, xach tay
van lam » van nam
tay hoi » tay ho, tao hoi, tay thai
sach tu » sach thu, cach tu, sach uu
cua tre » cua te, cuu tre, cua triet
luc va » tuc va, loc va
vi cua » vai cua, di cua

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: te ((sach ty) OR (sach tu)) dang tay hoi. hieu van lam ((luc va) OR (duc va)) hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach tu)) dang tay hoi. hieu van lam ((luc va) or (duc va)) hanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach tu)) dang tay hoi. hieu van lam ((luc va) or (duc va)) hanh vi cua tre*.