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, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua, manh cua
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 chieu lang - hanh tranh cua ((nhung cong) or (thong cong)) ((dan toan) OR (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu lang - hanh tranh cua ((nhung cong) OR (thong cong)) ((dan toan) OR (van toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu lang - hanh tranh cua ((nhung cong) or (thong cong)) ((dan toan) OR (van toan)) cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu lang - hanh tranh cua ((nhung cong) or (thong cong)) ((dan toan) OR (van toan)) cao*.