Perhaps you should try some spelling variations:
thanh thoi » hanh thoi, thanh pho, thanh hoa
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
thoi cua » hoi cua, thai cua, troi cua
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
su xac » pu xac, su cac
xac ky » cac ky, sac ky, bac ky

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 xay hoi. ((hieu ve) or (lieu va)) cac duc van thanh thoi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su xac ky dang xay hoi. ((hieu ve) OR (lieu va)) cac duc van thanh thoi cua triet.
• Adding a wildcard symbol may retrieve word variants: su xac ky dang xay hoi. ((hieu ve) or (lieu va)) cac duc van thanh thoi cua triet*.