Perhaps you should try some spelling variations:
lky nang » ly nang, ki nang, ke nang
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
hanh ca » hanh cac, hanh cat, hanh cua
cua tre » cua te, cuu tre, cua triet
toc va » hoc va, toc ta, tuc va
ca cua » co cua

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 ((ky nang) or (lky nang)) ((le hoi) or (ma hoa)). hieu va cac toc va hanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky nang) OR (lky nang)) ((le hoi) OR (ma hoa)). hieu va cac toc va hanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ((ky nang) or (lky nang)) ((le hoi) or (ma hoa)). hieu va cac toc va hanh ca cua tre*.