Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
canh thanh » canh tranh, danh thanh, nhanh thanh
dung huong » dung thuong, dung phuong, dong huong
anh thanh » danh thanh, nhanh thanh, thanh thanh
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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 xanh)) - ((canh thanh) or (anh thanh)) su dung huong dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - ((canh thanh) OR (anh thanh)) su dung huong dan chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu xanh)) - ((canh thanh) or (anh thanh)) su dung huong dan chan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu xanh)) - ((canh thanh) or (anh thanh)) su dung huong dan chan tu*.