Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh do
qua cham » qua hai, qua cac, va cham
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tang ma » mang may, tang van
cham so » cham soc, cham o, ham so
doi cua » dai cua, hoi cua
so gia » so giai, so giao, ho gia
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: te sach tu ((nang x) or (tang ma)) hoi. hieu qua cham so gia thanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((nang x) OR (tang ma)) hoi. hieu qua cham so gia thanh doi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach tu ((nang x) or (tang ma)) hoi. hieu qua cham so gia thanh doi cua te*.