Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong thai » trong thi, trong thuat, trong nha
trong thoi » trong thi, trong tho, trong trot
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tac toan » tam toan, hach toan, tich toan
tap toan » tap doan, tap quan, bai toan

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 - anh ((trong thai) or (trong thoi)) dung cong ((tac toan) or (tap toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - anh ((trong thai) OR (trong thoi)) dung cong ((tac toan) OR (tap toan)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - anh ((trong thai) or (trong thoi)) dung cong ((tac toan) or (tap toan)) ban*.