Perhaps you should try some spelling variations:
dong thanh » truong thanh
doi chieu » doi chi, ho chieu, mot chieu
ngan hanh » ngan thanh, ngan hang, ngan danh
hanh dong » anh dong, ha dong
doc hieu » toc thieu, hoc thieu, hoc hien
tuan cao » toan cao, quang cao, thuan cam
juan cao » quang cao, toan cao, quan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doc hieu)) sach - hanh chinh ngan hanh dong thanh ((tuan cao) OR (juan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - hanh chinh ngan hanh dong thanh ((tuan cao) OR (juan cao))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) sach - hanh chinh ngan hanh dong thanh ((tuan cao) OR (juan cao))*".