Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
van cong » van dong, van phong, phan cong
tap toan » tap doan, bai toan
tap quan » tac quan, hai quan
cua van » cua ban, cua vat, cua dan

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 - canh tranh cua van cong ((tap toan) OR (tap quan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh tranh cua van cong ((tap toan) OR (tap quan)) cau*".