Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
tung cua » trung cua, tuong cua, dung cua
tac toan » tam toan, hach toan, tich toan
tap toan » tap doan, tap quan, bai toan
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: ho chieu sach - thanh tung cua van dong ((tac toan) OR (tap toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung cua van dong ((tac toan) OR (tap toan)) tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung cua van dong ((tac toan) OR (tap toan)) tap*.