Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
vang thanh » van thanh, dang thanh, tang thanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
thanh tap » thanh lap, thanh tai, thanh tay
theo chu » theo chieu, cho chu, chao chu
chu nang » chuc nang, chua nang, cuu nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu nang - hanh tranh cua ((nhung cong) or (dung cong)) vang thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu nang - hanh tranh cua ((nhung cong) OR (dung cong)) vang thanh tap.
• Adding a wildcard symbol may retrieve word variants: theo chu nang - hanh tranh cua ((nhung cong) or (dung cong)) vang thanh tap*.