Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thi hanh » thi thanh
hanh vai » hanh vi, hanh va, hanh tai
sach hoi » sach doi, sach moi, cach thoi
lang xa » lang ha, dang xay, lang van
sach lo » sach dao, sach doi, sach moi
cau duc » cao duc, cau luc, chu duc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
thi van » thi lan, thi nang

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 lo) or (sach hoi)) lang xa hoi. ((thi van) OR (thi hanh)) cau duc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach lo) OR (sach hoi)) lang xa hoi. ((thi van) OR (thi hanh)) cau duc va hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach lo) or (sach hoi)) lang xa hoi. ((thi van) OR (thi hanh)) cau duc va hanh vai cua triet*".