Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
duc manh » suc manh, duc minh, duc tan
so sanh » do sanh
sanh ky » hanh ky, sang ky, nganh ky
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc phan
cua tre » cua te, cuu tre, cua triet
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: so sanh ky lang van hoi. hieu va cac ((duc van) or (((duc manh) or (duc anh)))) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky lang van hoi. hieu va cac ((duc van) OR (((duc manh) OR (duc anh)))) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: so sanh ky lang van hoi. hieu va cac ((duc van) or (((duc manh) or (duc anh)))) hanh vi cua tre*.