Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban thanh » ban hanh, ban hang
qua pham » quan pham, quy pham, qua cham
va thanh » gia thanh, va tinh, le thanh
phan cua » nhan cua, than cua, phat cua
va hoi » xa hoi, va hoc, va hoa
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: thuoc sach _ hang va hoi. hieu qua pham duc ((va thanh) or (ban thanh)) phan cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach _ hang va hoi. hieu qua pham duc ((va thanh) OR (ban thanh)) phan cua te.
• Adding a wildcard symbol may retrieve word variants: thuoc sach _ hang va hoi. hieu qua pham duc ((va thanh) or (ban thanh)) phan cua te*.