Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nang ma » tang ma, sang ma, nang cao
cac duc » cac du, cao duc, cac dac
va hanh » van hanh, va thanh, va danh
hanh ki » hanh vi, hanh ky, hanh kien
sac ky » cac ky
ma hoi » mai hoi, xa hoi, ma hoa
ki ve » ke ve, gi ve, vi ve

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) or (sai ky))) or (sach y)) nang ma hoi. lieu va cac duc va hanh ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sac ky) OR (sai ky))) OR (sach y)) nang ma hoi. lieu va cac duc va hanh ki ve triet.
• Adding a wildcard symbol may retrieve word variants: su ((((sac ky) or (sai ky))) or (sach y)) nang ma hoi. lieu va cac duc va hanh ki ve triet*.