Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tung » thanh cong
phan trong » pham trong, nhan trong, phan thuong
phan tong » phan cong, han tong, phan hong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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)) - thanh tung ((phan tong) or (phan trong)) cong dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - thanh tung ((phan tong) OR (phan trong)) cong dan phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chiet tach)) - thanh tung ((phan tong) or (phan trong)) cong dan phan dau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chiet tach)) - thanh tung ((phan tong) or (phan trong)) cong dan phan dau*.