Perhaps you should try some spelling variations:
cong thuong » hang thuong
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
binh hoang » minh hoang, dinh hoang, kinh hoang
thuong dan » huong dan, thuong han, thuong dam
hoang van » hang va
van cong » van dong, van phong, phan cong
dan luan » doanh luan, dung luan, tang luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sach) or (chieu tinh)) - binh hoang van cong thuong dan luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sach) OR (chieu tinh)) - binh hoang van cong thuong dan luan van.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sach) or (chieu tinh)) - binh hoang van cong thuong dan luan van*.