Perhaps you should try some spelling variations:
sach tru » sach truc, sach thu, sach tu
cham duc » pham duc, cham soc, pham duy
ve triet » va trien, su triet
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
tu cham » toc cham, thi cham
va hanh » van hanh, va thanh, va danh
hanh de » hanh ve, hanh kem
chu tu » cau tu, thu tu, chung 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 tru ((nang xa) or (nang ma)) hoi. chu tu cham duc va hanh de ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tru ((nang xa) OR (nang ma)) hoi. chu tu cham duc va hanh de ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach tru ((nang xa) or (nang ma)) hoi. chu tu cham duc va hanh de ve triet*.