Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh ki » hanh vi, hanh ky, hanh kien
va hanh » van hanh, va thanh, va danh
dao tuc » dao duc
sach ky » sac ky, sach ty, sach kem
cao tuc » cao duc, cao suc, cao toc
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
ki su » ky su

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