Perhaps you should try some spelling variations:
chua nang » chuc nang, kha nang, cuu nang
chua xang » chuc nang, chu bang, chua dong
hanh tang » hanh trang, anh tang, hanh mang
dong cong » duong cong, dung cong, dang cong
tang van » dang van, hoang van, trong van
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua nang) OR (chua xang)) - hanh tang van dong cong ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chua nang) OR (chua xang)) - hanh tang van dong cong ((dan than) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chua nang) OR (chua xang)) - hanh tang van dong cong ((dan than) or (ban than)) cau*.