Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khoa hoc » hoa hoc
chat hoc » chat hoa, chat thom, vat hoc
hanh dai » hanh tai, hanh dao, vanh dai
ky dang » ky nang, ky danh
dang ha » dong ha, dung ha, lang ha
hieu va » lieu va, hieu qua
cho hoc » co hoc
va hanh » van hanh, va thanh, ban hanh
pu xac » su xac
xac ky » cac ky, sac ky, bac ky
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: pu xac ky dang ha hoi. hieu va ((((cho hoc) OR (khoa hoc))) or (chat hoc)) va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: pu xac ky dang ha hoi. hieu va ((((cho hoc) OR (khoa hoc))) OR (chat hoc)) va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "pu xac ky dang ha hoi. hieu va ((((cho hoc) OR (khoa hoc))) or (chat hoc)) va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: pu xac ky dang ha hoi. hieu va ((((cho hoc) OR (khoa hoc))) or (chat hoc)) va hanh dai cua triet*.