Perhaps you should try some spelling variations:
nganh cong » nhanh chong, thanh cong
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, te sach
cu nhung » cua nhung, tu nhung, co nhung
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
cong cu » chung 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 tieu sach - nganh cong cu nhung cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - nganh cong cu nhung cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - nganh cong cu nhung cong san ((toan cau) or (toan ban))*.