Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
chieu sach » chinh sach, chieu sang, chieu xanh
cua thuong » cua truong, cua phuong, ca thuong
hanh mang » nhanh mang, hanh trang, nhanh lang
nhan dang » nhan dan, phan dang, tran dang
cong tan » cong tac, cong san, cong thanh
tan quan » tang quan, toan quan, van quan
quan cap » quan cau, quan lap, quang cao

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 sach) OR (chiet tach)) - ((hanh mang) or (nhan dang)) cua thuong cong tan quan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - ((hanh mang) OR (nhan dang)) cua thuong cong tan quan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - ((hanh mang) or (nhan dang)) cua thuong cong tan quan cap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - ((hanh mang) or (nhan dang)) cua thuong cong tan quan cap*.