Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
ban hanh » ban hang
hieu va » lieu va, hieu qua
thu cuc » thi cuc, thu tuc, thu cua
danh xa » danh ca, dinh xa, dan xa
canh xa » canh va, canh tac, canh tay
hieu ve » hieu van
cuc ky » cac ky, cua ky, cu ky
cac tu » cac thu, cach tu, cac du
tu ban » thu ban, te ban

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

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