Perhaps you should try some spelling variations:
ngoc anh » ngu anh
lang van » dang van, tang van, hoang van
thuc van » thuc vat, thuc dan, thuc hanh
van hoi » van hoa, van hoc, van hoe
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
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: ((ngoc anh) or (hoc cao)) _ lang van hoi. hieu ve cac ((thuc van) or (thuc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ngoc anh) OR (hoc cao)) _ lang van hoi. hieu ve cac ((thuc van) OR (thuc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((ngoc anh) or (hoc cao)) _ lang van hoi. hieu ve cac ((thuc van) or (thuc va)) hanh vi cua tre*.