Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
so sach » so sanh, bo sach, co sach
long ha » dong ha, dong hoa, cong hoa
cong ha » cong hoa, dong ha, cong tac
sang ma » tang ma, nang ma, sang tao
qua hai » qua hoat
hai duc » hoai duc, mai duc, ha duc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
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: so sach thu ((((long ha) or (cong ha))) or (sang ma)) hoi. hieu qua hai duc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((((long ha) OR (cong ha))) OR (sang ma)) hoi. hieu qua hai duc va danh vi cua te.
• Adding a wildcard symbol may retrieve word variants: so sach thu ((((long ha) or (cong ha))) or (sang ma)) hoi. hieu qua hai duc va danh vi cua te*.