Perhaps you should try some spelling variations:
doan thien » hoan thien, toan thiet
hang cong » dang cong, hang nong, bang cong
doan thi » dan thi, doanh tai, hoang thi
chinh va » chinh ta, chinh tai, hanh va
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap
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: ((doan thien) or (doan thi)) thanh - hanh chinh va hang cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doan thien) OR (doan thi)) thanh - hanh chinh va hang cong dan than cau*.