Perhaps you should try some spelling variations:
phan thuong » hang thuong
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
phan xuong » phan cong
phuong dan » phuong danh, phuong doan, huong dan
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh tung ((phan thuong) OR (phan xuong)) phuong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung ((phan thuong) OR (phan xuong)) phuong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung ((phan thuong) OR (phan xuong)) phuong dan toan cao*.