Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, ban hanh
lai cua » dai cua, hai cua, lai chau
va danh » va dinh, va dan, dia danh
cam duc » cam xuc, cao duc, pham duc
sach ty » sach y, sach tu, xach tay
sang xa » song xa, lang xa, sang ma
van cam » van nam, van lam, van cau

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

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