Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trong » hanh trang, anh trong, hinh trong
va phuong » va thuong, cac phuong
cong manh » duong manh, cong thanh, hoang manh
cong danh » cuong danh, cong dan, cong thanh
trong va » trong van, trong ca, trong cac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (chieu sach)) - hanh trong va phuong ((cong manh) or (cong danh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - hanh trong va phuong ((cong manh) OR (cong danh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu sach)) - hanh trong va phuong ((cong manh) or (cong danh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu sach)) - hanh trong va phuong ((cong manh) or (cong danh)) toan cao*.