Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
van dau » van dao, phan dau
dau xuc » dau xac, dau xua, dau nuoc
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
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: su sach thue ((xang xa) or (mang may)) hoi. hieu van dau xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thue ((xang xa) OR (mang may)) hoi. hieu van dau xuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: su sach thue ((xang xa) or (mang may)) hoi. hieu van dau xuc va hanh vi cua te*.