Perhaps you should try some spelling variations:
trong van » trong cac
van tuan » van quan, van ban, anh tuan
tang van » dang van, hoang van, tang luan
sach thu » sach thue, sach thieu, sach tham
van tham » van thanh, van chat, van tai
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu ((tang van) OR (trong van)) hoi. hieu ((van tham) or (van tuan)) xuc va hanh vi cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((tang van) OR (trong van)) hoi. hieu ((van tham) OR (van tuan)) xuc va hanh vi cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach thu ((tang van) OR (trong van)) hoi. hieu ((van tham) or (van tuan)) xuc va hanh vi cua su".
• Adding a wildcard symbol may retrieve word variants: so sach thu ((tang van) OR (trong van)) hoi. hieu ((van tham) or (van tuan)) xuc va hanh vi cua su*.