Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » thong cong, hang cong, nhung don
ngang toan » nganh toan, quang toan
tranh cua » doanh cua, manh cua
dung cong » dung trong
dang toan » dang tran, dan toan, dung toan

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 xanh - hanh tranh cua ((nhung cong) OR (dung cong)) ((ngang toan) or (dang toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh tranh cua ((nhung cong) OR (dung cong)) ((ngang toan) OR (dang toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh tranh cua ((nhung cong) OR (dung cong)) ((ngang toan) or (dang toan)) cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tranh cua ((nhung cong) OR (dung cong)) ((ngang toan) or (dang toan)) cao*.