Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
thong cong » trong cong, tong cong, thong thong
hanh dinh » thanh dinh, hinh dinh, hanh tinh
cuu thong » cuu thuong, cuu tong, cuu chong
manh toan » thanh toan, anh tuan, tinh toan
dinh cuu » dinh chi
dan than » dan chan, ban than, van than

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

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