Perhaps you should try some spelling variations:
hanh tranh » hanh trinh, hanh trang, lanh tranh
nhung cong » dung cong, thong cong, hang cong
theo chua » theo chu, ho chua, cheo cua
chua nang » chuc nang, chua xang, kha nang
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

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