Perhaps you should try some spelling variations:
hoi tieu » hoc tieu, hoi hieu, hoi tiep
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu
co hieu » cao hieu, doc hieu
ta hang » ty hang, te hang, tao zhang
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((co hieu) or (hoi tieu)) quang - hanh chinh ((ta hang) OR (va hang)) cong dan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co hieu) OR (hoi tieu)) quang - hanh chinh ((ta hang) OR (va hang)) cong dan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((co hieu) or (hoi tieu)) quang - hanh chinh ((ta hang) OR (va hang)) cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((co hieu) or (hoi tieu)) quang - hanh chinh ((ta hang) OR (va hang)) cong dan phan cau*.