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

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

• Performing a fuzzy search may retrieve terms with similar spellings: su xac ky dang ha hoi. hieu va cao ((hoc van) or (hoc dan)) hanh dai ((cua triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky dang ha hoi. hieu va cao ((hoc van) OR (hoc dan)) hanh dai ((cua triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: su xac ky dang ha hoi. hieu va cao ((hoc van) or (hoc dan)) hanh dai ((cua triet) or (ve triet))*.