Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh
chieu sang » chieu sach, hieu lang, nhieu tang
hinh trong » chinh trong, dinh trong, sinh trong
hieu manh » hieu nganh, dieu hanh, hien hanh
trong van » trong cac
trong tap » trong thap, tong tap, trong tan
van dung » van dong, xay dung, tin dung
tap doan » tap quan
doan cau » toan cau, doan dau, doan cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (((chieu sang) OR (chieu xanh)))) - hinh trong van dung trong tap doan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu manh) or (((chieu sang) OR (chieu xanh)))) - hinh trong van dung trong tap doan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (((chieu sang) OR (chieu xanh)))) - hinh trong van dung trong tap doan cau*.