Perhaps you should try some spelling variations:
sach tham » sach nha
su sach » so sach, vu sach
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
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: su sach tham ((nang ma) OR (sang ma)) hoi. ((hieu ve) or (lieu va)) pham duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tham ((nang ma) OR (sang ma)) hoi. ((hieu ve) OR (lieu va)) pham duc va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tham ((nang ma) OR (sang ma)) hoi. ((hieu ve) or (lieu va)) pham duc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach tham ((nang ma) OR (sang ma)) hoi. ((hieu ve) or (lieu va)) pham duc va hanh vi cua te*.