Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cua nhung » va nhung
cong cua » cong cu, dong cua, huong cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - thanh cong cua nhung ((cong dan) or (cong san)) ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh cong cua nhung ((cong dan) OR (cong san)) ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - thanh cong cua nhung ((cong dan) or (cong san)) ((toan cau) or (toan tap))*.