Perhaps you should try some spelling variations:
ban thanh » ban hanh
ban hang » ngan hang
su sach » vu sach
so sach » so sanh, bo sach, co sach
ty hang » ly hang, ty xang, thi hang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao
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) or (so sach)) ty hang xa hoi. hieu va cam duc ((ban thanh) OR (ban hang)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty hang xa hoi. hieu va cam duc ((ban thanh) OR (ban hang)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sach)) ty hang xa hoi. hieu va cam duc ((ban thanh) OR (ban hang)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ty hang xa hoi. hieu va cam duc ((ban thanh) OR (ban hang)) vi cua te*.