Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
hieu ve » hieu van
tu sach » thu sach, su sach, te sach
ly hang » ly quang
ca hoi » cua hoi, xa hoi, co hoi
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ly hang ((ca hoi) or (cau hoi)). ((hieu ve) or (hieu va)) cam tuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly hang ((ca hoi) OR (cau hoi)). ((hieu ve) OR (hieu va)) cam tuc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ly hang ((ca hoi) or (cau hoi)). ((hieu ve) or (hieu va)) cam tuc va hanh vi cua triet*.