Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
te sach » toc sach
hieu va » lieu va, hieu qua
tuc van » thuc van, truc van, duc van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua
x hoi » xa hoi, o hoi, x ho

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 thue nang x hoi. hieu va cam ((tuc van) OR (tuc va)) hanh di cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach thue nang x hoi. hieu va cam ((tuc van) or (tuc va)) hanh di cua tre*.