Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh doi » thanh doi, hanh noi, hang doi
van hanh » van thanh, ban hanh, van anh
pham duy » pham duc
cham duc » pham duc, cham soc, phan duc
nang xay » dang xay, nganh xay, nang xuan
xay hoi » xa hoi, tay hoi, cay phoi
tu can » tu ban, tu cac, thu canh
doi su » oi su, don su, voi su
tu san » thu san, tu ban, vu san

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu can)) ky nang xay hoi. lieu va ((cham duc) OR (pham duy)) van hanh doi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu can)) ky nang xay hoi. lieu va ((cham duc) OR (pham duy)) van hanh doi su triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu can)) ky nang xay hoi. lieu va ((cham duc) OR (pham duy)) van hanh doi su triet*.