Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
van nang » van quang, van ban, van dong
van hanh » van thanh, ban hanh, van anh
vu nang » vuc nang, va nang, vu dang
hieu ve » hieu va, hieu van
cam vuc » cam xuc
vuc van » duc van, luc van, thuc van
hanh di » hanh vi, hanh de, hang di
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
v nang » va nang, voi nang, vuc nang
di cua » dai cua, doi cua, de cua
cua tu » cua tuc, cua su, cua cu

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: hoc sach ((((v nang) OR (van nang))) OR (vu nang)) ma hoi. hieu ve cam vuc van hanh di cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((((v nang) OR (van nang))) or (vu nang)) ma hoi. hieu ve cam vuc van hanh di cua tu~".
• Adding a wildcard symbol may retrieve word variants: hoc sach ((((v nang) OR (van nang))) or (vu nang)) ma hoi. hieu ve cam vuc van hanh di cua tu*.