Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
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: hoc ((thieu sach) or (thien hach)) - canh tranh cua nhung cong san ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - canh tranh cua nhung cong san ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (thien hach)) - canh tranh cua nhung cong san ((toan cau) or (toan cao))*.