Perhaps you should try some spelling variations:
te sach » toc sach
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
v nang » va nang, van nang, voi nang
ma hoi » mai hoi, xa hoi, ma hoa
ve hoc » te hoc, va hoc, vi hoc
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu
nuoc » quoc, duoc, ngoc

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 ((v nang) OR (vu nang)) ma hoi. hieu ve hoc nuoc va hanh di cua tu~.
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) or (vu nang)) ma hoi. hieu ve hoc nuoc va hanh di cua tu*.