Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
sach ly » sach y, sach ty, sach hay
sach lo » sach dao, sach doi, sach hoi
van lam » van nam
chu van » cuu van, chu han
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua su » qua su
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: tu ((sach ly) OR (sach lo)) nang x hoi. hieu van lam chu van hanh di cua su~.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach lo)) nang x hoi. hieu van lam chu van hanh di cua su*.