Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuoc » nam thu, nha thuoc, cay thuoc
cam thuc » am thuc, cam thu, can thuc
nam thuc » am thuc, nam thu, nam tu
su sach » so sach, vu sach
sach xa » sach dao, sach nha, sach bai
xa nang » da nang, va nang, xa nong
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
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: su sach xa nang cao hoi. hieu ve ((cam thuc) or (((nam thuc) or (nam thuoc)))) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach xa nang cao hoi. hieu ve ((cam thuc) OR (((nam thuc) OR (nam thuoc)))) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach xa nang cao hoi. hieu ve ((cam thuc) or (((nam thuc) or (nam thuoc)))) va hanh vi cua triet*.