Perhaps you should try some spelling variations:
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, nhung don
theo chuc » theo chu, tho chu, treo chu
hang cong » dang cong, hang nong, bang cong
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chuc nang - ((hanh trang) or (canh tranh)) cua ((nhung cong) OR (hang cong)) van thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chuc nang - ((hanh trang) OR (canh tranh)) cua ((nhung cong) OR (hang cong)) van thanh tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chuc nang - ((hanh trang) or (canh tranh)) cua ((nhung cong) OR (hang cong)) van thanh tai".
• Adding a wildcard symbol may retrieve word variants: theo chuc nang - ((hanh trang) or (canh tranh)) cua ((nhung cong) OR (hang cong)) van thanh tai*.