Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
thu sach » tu sach, thuat sach, thuoc sach
hiem he » hiem xe, thien he, hiem cho
hieu he » hieu ve, hieu le, hieu hien
va danh » va dinh, va dan, va hanh
sai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, me hoi
y nang » ky nang, ly nang, v nang
thu va » thuc va, thue va, tu va

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 y nang ((ma hoi) or (ma hoa)). ((hieu he) or (hiem he)) nam thu va danh sai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang ((ma hoi) OR (ma hoa)). ((hieu he) OR (hiem he)) nam thu va danh sai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang ((ma hoi) or (ma hoa)). ((hieu he) or (hiem he)) nam thu va danh sai cua triet*.