Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
cam thu » nam thu, cac thu, ca thu
thu van » thuc van, thuy van, tu van
hanh di » hanh vi, hanh de, hang di
cau tre » cau tren, cau treo, cau tra
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
va cam » va cham, va cac, va cao
di cau » da cau, diem cau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach v nang x hoi. hieu va cam thu van hanh di cau tre~.
• Adding a wildcard symbol may retrieve word variants: vu sach v nang x hoi. hieu va cam thu van hanh di cau tre*.