Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
anh quang » anh xquang, anh quan, nhanh quang
quang cua » quan cua, quang tuan, quang huy
cong vang » cong lang, cong quang, cong ngang
cua dung » cua dang, cua dong, qua dung
cong van » cong san, song van, cong tan
tuan tu » tuan thu, tran tu, toan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien xanh) or (chieu xanh)) - anh quang cua dung ((cong van) OR (cong vang)) tuan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - anh quang cua dung ((cong van) OR (cong vang)) tuan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (chieu xanh)) - anh quang cua dung ((cong van) OR (cong vang)) tuan tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (chieu xanh)) - anh quang cua dung ((cong van) OR (cong vang)) tuan tu*.