Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
cua triet » cua viet, su triet, va triet
tam thuc » tham thuc, am thuc, nam thuc
mai hoi » mai khoi, dai hoi, lai hoi
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
ma hoi » xa hoi, ma hoa, me hoi
va tam » van tam, va tham, va tac
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: thuat sac ky nang ((ma hoi) or (mai hoi)). lieu va tam thuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang ((ma hoi) OR (mai hoi)). lieu va tam thuc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang ((ma hoi) or (mai hoi)). lieu va tam thuc va hanh vi cua triet*.