Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hanh dao » lanh dao, thanh dat, thanh dam
dao cua » dai cua, day cua, dan cua
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
tu san » thu san, tu ban, tu can
tu sai » tu bai, tu cai, tu lai

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

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