Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
cua dang » cua cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, 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: ((doi chieu) OR (hoc thieu)) xanh - hanh tranh ((cua dang) OR (cua ban)) cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (hoc thieu)) xanh - hanh tranh ((cua dang) OR (cua ban)) cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (hoc thieu)) xanh - hanh tranh ((cua dang) OR (cua ban)) cong dan toan cao*.