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