Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
pham duy » pham duc
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
sach ty » sach y, sach thu, xach tay
sach tu » sach thu, cach tu, sach uu
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
duy van » duy vat, dung van
lai cua » dai cua, hai cua, lai chau

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 ty) OR (sach tu)) nang x ho. hieu ve pham duy van hanh lai cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) OR (sach tu)) nang x ho. hieu ve pham duy van hanh lai cua triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) OR (sach tu)) nang x ho. hieu ve pham duy van hanh lai cua triet*.