Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
theo chuc » theo chu, tho chu, treo chu
hanh tang » hanh trang, anh tang, hanh mang
tang cua » mang cua, hang cua, tang luan
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chuc nang - hanh tang cua ((nhung cong) OR (thong cong)) ((dan toan) OR (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: theo chuc nang - hanh tang cua ((nhung cong) OR (thong cong)) ((dan toan) OR (ban than)) cau*.