Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
dang cong » dung cong
van khang » van khanh, van thanh, van quang
khang cao » khang chan, nang cao, quang cao
lieu van » lieu va, hieu van, sieu van
cua dang » cua cong, cua ban
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (lieu van)) - ((hanh tranh) OR (hanh trinh)) cua dang cong van khang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (lieu van)) - ((hanh tranh) OR (hanh trinh)) cua dang cong van khang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chinh sach) or (lieu van)) - ((hanh tranh) OR (hanh trinh)) cua dang cong van khang cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (lieu van)) - ((hanh tranh) OR (hanh trinh)) cua dang cong van khang cao*.