Perhaps you should try some spelling variations:
vu sach » vu bach, su sach, vu khach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
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: vu sach ty xang xa hoi. ((hieu ve) or (hieu va)) pham duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty xang xa hoi. ((hieu ve) OR (hieu va)) pham duc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ty xang xa hoi. ((hieu ve) or (hieu va)) pham duc va hanh vi cua te*.