Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
ban hanh » ban hang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va
thu ban » thu hang
y hang » ly hang, ty hang, yu hang
ca thu » cac thu, cam thu, ca tru
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: toc sach y hang xa hoi. ((hieu va) or (hieu qua)) ca thu ban hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y hang xa hoi. ((hieu va) OR (hieu qua)) ca thu ban hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: toc sach y hang xa hoi. ((hieu va) or (hieu qua)) ca thu ban hanh vi cua te*.