Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chi thuong » thi thuong, phi thuong, cho thuong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh dinh » thanh dinh, hinh dinh, hanh tinh
chu sang » chu bang, thu sang, chuc nang
dinh chi » dinh thi, dinh tri, dinh moi
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu sang) OR (chieu sang)) - hanh dinh chi thuong cong ((dan toan) or (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu sang) OR (chieu sang)) - hanh dinh chi thuong cong ((dan toan) OR (van toan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu sang) OR (chieu sang)) - hanh dinh chi thuong cong ((dan toan) or (van toan)) ban*".