Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
sach thu » sach thue, sach thieu, sach tham
van hanh » van thanh, ban hanh, van anh
lai cua » dai cua, hai cua, lai chau
duc van » duc va, duc tan, duc manh
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach thu)) ((nang xa) or (nang ma)) hoi. hieu ve pham duc van hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) ((nang xa) OR (nang ma)) hoi. hieu ve pham duc van hanh lai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) ((nang xa) or (nang ma)) hoi. hieu ve pham duc van hanh lai cua triet*.