Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu lang » chieu sang, hieu lang, chi lang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, nhung don
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

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