Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
dung cong » dung trong
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
cong do » cuong do, cong dot, cong so
do van » dao van, vo van, so van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) OR (chieu sang)) - anh tang cua dung cong do van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sang)) - anh tang cua dung cong do van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sang)) - anh tang cua dung cong do van ban*.