Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hieu van » hieu va, thien van, lieu va
quan ban » quang ban, qua ban, quan van
ban cong » bang cong, van cong, phan cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu van) or (hieu quang)) - ((hanh chinh) or (canh tranh)) quan ban cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu van) OR (hieu quang)) - ((hanh chinh) OR (canh tranh)) quan ban cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu van) or (hieu quang)) - ((hanh chinh) or (canh tranh)) quan ban cong dan toan cao*.