Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
chieu sach » chinh sach, chiet tach, chieu sang
thanh tinh » thanh binh, nhanh tinh, than kinh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
phan cau » phan dau, phan cac, phan tu
toan cau » toan cao, toan ban, toan tap

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 - thanh tinh quang ((nhung tuong) or (nhung cong)) dan ((phan cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tinh quang ((nhung tuong) OR (nhung cong)) dan ((phan cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tinh quang ((nhung tuong) or (nhung cong)) dan ((phan cau) or (toan cau))*.