Perhaps you should try some spelling variations:
hanh hoi » hanh thoi, hanh noi, hanh hoa
hoi cua » hoi chuc
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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 ((y nang) OR (v nang)) ma hoi. hieu qua ((nhan luc) OR (nang luc)) va hanh hoi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((y nang) OR (v nang)) ma hoi. hieu qua ((nhan luc) or (nang luc)) va hanh hoi cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sach ((y nang) OR (v nang)) ma hoi. hieu qua ((nhan luc) or (nang luc)) va hanh hoi cua tre*.