Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cua nhung » va nhung
tuong van » truong van, trong van, duong van
toan thuc » toan hoc, dan thuc, nhan thuc
tung cua » trung cua, tuong cua, dung cua
tuan cau » toan cau, quan cau, tuan cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh tung cua nhung tuong van ((tuan cau) or (toan thuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh tung cua nhung tuong van ((tuan cau) OR (toan thuc)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh tung cua nhung tuong van ((tuan cau) or (toan thuc))*.