Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh vai » hanh vi, hanh va, hanh van
hanh tai » thanh tai, hang tai, han tai
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
dam tu » nam tu, cam tu, tam tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky nang x ho. hieu ve ((nam thuc) or (dam tu)) va ((hanh vai) OR (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky nang x ho. hieu ve ((nam thuc) OR (dam tu)) va ((hanh vai) OR (hanh tai)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te san ky nang x ho. hieu ve ((nam thuc) or (dam tu)) va ((hanh vai) OR (hanh tai)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te san ky nang x ho. hieu ve ((nam thuc) or (dam tu)) va ((hanh vai) OR (hanh tai)) cua tre*.