Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh trang » thanh trung, canh tranh, hanh trinh
cap phuong » cac phuong, tap phuong, chap thuong
cau phuong » cac phuong, cuu phuong, va phuong
dong dan » dong danh, duong dan, dong san
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: doc ((chieu xanh) OR (chieu sang)) - hanh trang ((cap phuong) or (cau phuong)) dong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu xanh) OR (chieu sang)) - hanh trang ((cap phuong) OR (cau phuong)) dong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu xanh) OR (chieu sang)) - hanh trang ((cap phuong) or (cau phuong)) dong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: doc ((chieu xanh) OR (chieu sang)) - hanh trang ((cap phuong) or (cau phuong)) dong dan toan cao*.