Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang lai » nang tai, nang cai, nang hai
hanh vai » hanh vi, hanh va, hanh tai
mang lai » mang lam, mang luoi, dang loai
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky ((nang lai) OR (mang lai)) hoi. ((hieu ve) or (hieu va)) cam xuc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky ((nang lai) OR (mang lai)) hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky ((nang lai) OR (mang lai)) hoi. ((hieu ve) or (hieu va)) cam xuc va hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky ((nang lai) OR (mang lai)) hoi. ((hieu ve) or (hieu va)) cam xuc va hanh vai cua triet*.