Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
hanh va » hang va, hanh vi
cuu tre » cua tre, cau tren, cau treo
te sai » te tai, te bai, te lai
sai ky » sac ky
tu day » tu dat, tu cay, tu dau
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sai ky nang x ho. hieu van cam ((tu day) or (tu duy)) hanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky nang x ho. hieu van cam ((tu day) OR (tu duy)) hanh va cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sai ky nang x ho. hieu van cam ((tu day) or (tu duy)) hanh va cuu tre*.