Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
ta hanh » ta thanh, va hanh, tu hanh
cac toc » cac toi, cac thoi
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
tu ban » thu ban, te ban
vu san » va san, vu ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu san) or (tu ban)) ky nang ma hoi. hieu va ((cac toc) OR (cac nuoc)) ta hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu san) OR (tu ban)) ky nang ma hoi. hieu va ((cac toc) OR (cac nuoc)) ta hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu san) or (tu ban)) ky nang ma hoi. hieu va ((cac toc) OR (cac nuoc)) ta hanh vai cua tre*".