Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
mai hoi » mai khoi, dai hoi, lai hoi
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
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 sac ky nang mai hoi. hieu ((ve cham) or (ve cac)) luc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang mai hoi. hieu ((ve cham) OR (ve cac)) luc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang mai hoi. hieu ((ve cham) or (ve cac)) luc va hanh vi cua triet*.