Perhaps you should try some spelling variations:
nhanh hoi » nhanh hai, nhanh hon, nhanh hoan
hieu van » hieu va, thien van, lieu va
va nhanh » va thanh, va hanh, va nhan
te sach » toc sach
hoi cua » hoi chuc
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may 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: te sach ((y nang) OR (ly nang)) mai hoi. ((hieu ve) OR (hieu van)) cam duc va nhanh hoi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) mai hoi. ((hieu ve) or (hieu van)) cam duc va nhanh hoi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) mai hoi. ((hieu ve) or (hieu van)) cam duc va nhanh hoi cua tre*.