Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van ban
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
van anh » van thanh, tuan anh, van minh
hieu va » lieu va, hieu qua
tu sac » tu sach, tu cac, tu san
ca thu » cac thu, cam thu, ca tru
sac ky » cac ky, sai ky
di su » doi su, ki su, da su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) ca thu ((van hanh) or (van anh)) di su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu ve) OR (hieu va)) ca thu ((van hanh) OR (van anh)) di su triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu ve) or (hieu va)) ca thu ((van hanh) or (van anh)) di su triet*.