Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dong cong » duong cong, dung cong, cong cong
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
san toan » van toan, dan toan, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (theo chieu)) sang - hanh tranh cua ((dong cong) OR (dang cong)) san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo chieu)) sang - hanh tranh cua ((dong cong) OR (dang cong)) san toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (theo chieu)) sang - hanh tranh cua ((dong cong) OR (dang cong)) san toan cao*".