Perhaps you should try some spelling variations:
trong van » trong cac
van hanh » van thanh, ban hanh, van anh
tang van » dang van, hoang van, tang luan
xuc van » duc van, luc van, xuc ban
hieu ve » hieu va, hieu van
sach va » sach xa, sach ha, sach dao
cua tre » cua te, cuu tre, cua triet
sach v » sach y, sach 2, sach vay
ve cam » ve cham, ve cac, va cam
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: te ((sach v) or (sach va)) ((tang van) OR (trong van)) hoi. hieu ve cam xuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach v) OR (sach va)) ((tang van) OR (trong van)) hoi. hieu ve cam xuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach v) or (sach va)) ((tang van) OR (trong van)) hoi. hieu ve cam xuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach v) or (sach va)) ((tang van) OR (trong van)) hoi. hieu ve cam xuc van hanh vi cua tre*.