Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, nhung don
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
mang cua » manh cua, dung cua, ban cua
phan cau » phan dau, phan cac, phan lap

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 - cach mang cua ((nhung cong) or (hang cong)) toan ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - cach mang cua ((nhung cong) OR (hang cong)) toan ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - cach mang cua ((nhung cong) or (hang cong)) toan ((phan cau) or (phan tu))*.