Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
cham tuc » nham thuc, pham thuc, tham thuc
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va danh, ban hanh
lai cua » dai cua, hai cua, lai chau
su sach » so sach, vu sach
y tang » ky tang, 6 tang, 7 tang
ma hoi » mai hoi, ma hoa, me hoi

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 y tang ((ma hoi) OR (xa hoi)). hieu ve cham tuc ((va hanh) or (va thanh)) lai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y tang ((ma hoi) OR (xa hoi)). hieu ve cham tuc ((va hanh) OR (va thanh)) lai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y tang ((ma hoi) OR (xa hoi)). hieu ve cham tuc ((va hanh) or (va thanh)) lai cua triet*".