Perhaps you should try some spelling variations:
hanh cat » hanh cac, hanh luat, nhanh cay
te sach » toc sach
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
cat cua » chat cua, ca cua, mat cua
cua tre » cua te, cuu tre, cua triet
y nang » ly nang, v nang, may nang
me hoi » le hoi
toc va » hoc va, toc ta, tuc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) or (ky nang)) ((me hoi) or (ma hoa)). hieu va cac toc va hanh cat cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ky nang)) ((me hoi) OR (ma hoa)). hieu va cac toc va hanh cat cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ky nang)) ((me hoi) or (ma hoa)). hieu va cac toc va hanh cat cua tre*.