Perhaps you should try some spelling variations:
thuat sac » thuat sach, thuat san, thuat tac
cua triet » cua viet, su triet, va triet
cham hoi » cham voi, cham h'roi, pham hoai
cao hoi » cau hoi, co hoi, cao hoc
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
cam lo » nam lo, cam ly, cam o
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 cao hoi. hieu ve ((cham hoi) or (cam lo)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sac ky nang cao hoi. hieu ve ((cham hoi) OR (cam lo)) va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thuat sac ky nang cao hoi. hieu ve ((cham hoi) or (cam lo)) va hanh vi cua triet*.