Perhaps you should try some spelling variations:
cong thuong » hang thuong
hanh trong » hanh trang, anh trong, hinh trong
hoang tran » hoang tuan, hoang thanh, hoang van
trong van » trong cac
dang toan » dang tran, dan toan, dung toan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
van cong » van dong, van phong, phan cong

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 sach - hanh trong van cong thuong ((dang toan) or (hoang tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh trong van cong thuong ((dang toan) OR (hoang tran)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh trong van cong thuong ((dang toan) or (hoang tran)) cao*.