Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tu can » tu ban, tu cac, thu canh
tu san » thu san, tu ban, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) OR (tu can)) ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh va su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu can)) ky lang xa hoi. ((hieu ve) OR (hieu va)) cam duc va hanh va su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) OR (tu can)) ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh va su triet".
• Adding a wildcard symbol may retrieve word variants: ((tu san) OR (tu can)) ky lang xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh va su triet*.