Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang 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: ho ((chieu xanh) or (hieu qua)) - ((hanh trang) OR (hanh trinh)) va nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu qua)) - ((hanh trang) OR (hanh trinh)) va nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu qua)) - ((hanh trang) OR (hanh trinh)) va nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu qua)) - ((hanh trang) OR (hanh trinh)) va nhung cong dan toan cao*.