Perhaps you should try some spelling variations:
phuong trong » thuong trong, huong trong, phong trong
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
chu phuong » cuu phuong, thu phuong, cau phuong
trinh chu » trinh cau, trinh cho, trinh thuc
doan phan » doanh phan, toan phan, doanh nhan
dan phan » dan chan, van phan, dam phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: mot chieu sach - canh trinh chu phuong trong ((dan phan) or (doan phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: mot chieu sach - canh trinh chu phuong trong ((dan phan) OR (doan phan)) cac.
• Adding a wildcard symbol may retrieve word variants: mot chieu sach - canh trinh chu phuong trong ((dan phan) or (doan phan)) cac*.