Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
thanh tung » thanh cong
dung cong » dung trong
cong quan » cuong quan, cong quang, tong quan
thanh bac » thanh bai, thanh san, thanh hai
nhanh bac » nhanh ha, nhanh va
tung va » trung va, tuong va, dung va
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chieu sach)) - thanh tung va dung cong quan ((thanh bac) OR (nhanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu sach)) - thanh tung va dung cong quan ((thanh bac) OR (nhanh bac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - thanh tung va dung cong quan ((thanh bac) OR (nhanh bac))".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - thanh tung va dung cong quan ((thanh bac) OR (nhanh bac))*.