Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh lai » hanh lam, hanh tai, thanh lap
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
thu sach » tu sach, thuat sach, thuoc sach
ty hang » ly hang, ty xang, thi hang
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
ty sang » ty xang, duy sang, thu sang
lai cua » dai cua, hai cua, lai chau
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ty sang) OR (ty hang)) ma hoi. hieu va ((cham duc) or (pham duy)) va hanh lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ty sang) OR (ty hang)) ma hoi. hieu va ((cham duc) OR (pham duy)) va hanh lai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ty sang) OR (ty hang)) ma hoi. hieu va ((cham duc) or (pham duy)) va hanh lai cua triet*".