Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh thai » trang thai, tran thi, tinh thai
thai cong » tai cong, thi cong, thanh cong
cong cong » cong dong, trong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tap toan » tap doan, tap quan
bai toan » bai 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 - canh tranh thai cong cong ((tap toan) OR (bai toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh tranh thai cong cong ((tap toan) OR (bai toan)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh thai cong cong ((tap toan) OR (bai toan)) cau*.