Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
phan cong » thanh cong
tranh va » tranh van, trang va, trinh va
cong san » cong tac
san thai » sac thai, ban thai, van thai
thai cao » tai cao, thoai cac, thuat cao
va phan » van phan, va phat, va phap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) OR (chiet tach)) - canh tranh va phan cong san thai cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - canh tranh va phan cong san thai cao*".