Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
pham huu » pham duc, pham duy, phan huy
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
bo sach » co sach, hoc sach
nang ma » tang ma, sang ma, mang may
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
huu van » cuu van, huu han, luu van
vai cua » dai cua, hai cua, lai 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: bo sach thu ((nang cao) or (nang ma)) hoi. hieu ve pham huu van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach thu ((nang cao) OR (nang ma)) hoi. hieu ve pham huu van hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: bo sach thu ((nang cao) or (nang ma)) hoi. hieu ve pham huu van hanh vai cua te*.