Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van cua » vang cua, ban cua, dan cua
va kinh » va tinh, qua kinh
va dinh » van dinh, va tinh, vu dinh
hieu ve » hieu va, hieu van
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
cam tu » cam thu, nam tu, dam tu
ma hoi » xa hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam

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 nang ((ma hoi) OR (mai hoi)). hieu ve cam tu ((va dinh) or (va kinh)) van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (mai hoi)). hieu ve cam tu ((va dinh) OR (va kinh)) van cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ((ma hoi) OR (mai hoi)). hieu ve cam tu ((va dinh) or (va kinh)) van cua triet*".