Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trong vang » trong van, trong dang, trong tang
hieu xanh » hieu manh, hieu nganh, dieu hanh
tong luan » tang luan, dung luan, hang luan
luan dung » lan dung, luan dong, luan hung
vang toan » van toan, dang toan, quang toan
toan cao » toan ban, toan tap
ha tong » han tong, ha dong, ha tang

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 xanh) OR (chieu xanh)) - ha tong luan dung trong vang toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (chieu xanh)) - ha tong luan dung trong vang toan cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (chieu xanh)) - ha tong luan dung trong vang toan cao*.