Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
xuc van » duc van, luc van, vuc van
va cham » va chat, va tham
sach tu » sach thu, cach tu, sach ty
tu hang » thu hang, tu hanh, tu hung
ca hoi » cua hoi, xa hoi, co hoi
vi cua » vai cua, di cua
cua te » cua tu

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 tu hang ((ca hoi) or (cau hoi)). hieu ((va cham) or (cao chat)) xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu hang ((ca hoi) OR (cau hoi)). hieu ((va cham) OR (cao chat)) xuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach tu hang ((ca hoi) or (cau hoi)). hieu ((va cham) or (cao chat)) xuc van hanh vi cua te*.