Perhaps you should try some spelling variations:
thieu sach » chieu sach, hieu cach, theo sach
thien hach » thien thanh, hien hanh
cong thanh » dong thanh, cong trinh, truong thanh
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong ty
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 dang ((cong tan) or (cong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (thien hach)) - canh tranh cua dang ((cong tan) OR (cong thanh)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sach) OR (thien hach)) - canh tranh cua dang ((cong tan) or (cong thanh)) toan cao*".