Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
van tan » van tuan, van ban, van thanh
van tai » von tai, van tuan

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 - canh tranh va phuong cong ((tan tran) or (((van tan) OR (van tai)))) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh tranh va phuong cong ((tan tran) OR (((van tan) OR (van tai)))) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh tranh va phuong cong ((tan tran) or (((van tan) OR (van tai)))) ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh va phuong cong ((tan tran) or (((van tan) OR (van tai)))) ban*.