Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu de » hieu ve, hieu he, hieu le
va danh » va dinh, va dan, va hanh
danh va » doanh va, hanh va, anh va
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
de dat » de dao
va cua » va chua, via cua, ca cua
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: vu sach ((ty nang) OR (ty hang)) ma hoi. hieu de dat nuoc va danh va cua tre~.
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty nang) or (ty hang)) ma hoi. hieu de dat nuoc va danh va cua tre*.