Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
tai khoi » tai khoa, mai khoi, tao khoi
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
sang ky » sang kyo, dang ky, tang ky
hieu va » lieu va, hieu qua
lam duc » lam duoc, pham duc, nam duoc
cua tre » cua te, cuu tre, cua triet
san ky » van ky, dan ky, tan ky
ban ky » van ky, dan ky
va lam » van lam, va lap
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: phai ((((san ky) or (ban ky))) or (sang ky)) nang tai khoi. hieu va lam duc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: phai ((((san ky) OR (ban ky))) OR (sang ky)) nang tai khoi. hieu va lam duc va thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: phai ((((san ky) or (ban ky))) or (sang ky)) nang tai khoi. hieu va lam duc va thanh vi cua tre*.