Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trang » thanh trung, canh tranh, hanh trinh
cua thuong » cua truong, cua phuong, ca thuong
trinh toan » tinh toan, thanh toan, trinh han
hanh tang » anh tang, hanh mang, hanh tung
toan tap » toan ban

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 tang) or (hanh trang)) cua thuong cong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chieu sach)) - ((hanh tang) OR (hanh trang)) cua thuong cong trinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) OR (chieu sach)) - ((hanh tang) or (hanh trang)) cua thuong cong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) OR (chieu sach)) - ((hanh tang) or (hanh trang)) cua thuong cong trinh toan tap*.