Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, lieu va
mai hoi » mai khoi, dai hoi, lai hoi
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
ban ky » dan ky
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: phu ((ban ky) or (van ky)) nang mai hoi. hieu van lam duc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: phu ((ban ky) OR (van ky)) nang mai hoi. hieu van lam duc va hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: phu ((ban ky) or (van ky)) nang mai hoi. hieu van lam duc va hanh vi cua tre*.