Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
nam thuc » nam thuoc, am thuc, nam thu
thuc day » thuc dan, thuc vat
day hanh » day nhanh, day thanh, dao hanh
hanh vai » hanh vi, hanh va, hanh tai
bach ky » bac ky
lang ha » long ha
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va nam » van nam, ha nam, va nay

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ky ((lang ha) or (lang van)) hoi. hieu va nam thuc day hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ky ((lang ha) OR (lang van)) hoi. hieu va nam thuc day hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: vu bach ky ((lang ha) or (lang van)) hoi. hieu va nam thuc day hanh vai cua tre*.