Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
anh truong » manh truong, anh thuong, anh trong
truong bo » truong cao, truong dao
bang cong » dang cong, bang song, hang cong
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
bo bang » bo wang, ba bang, co bang

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 - anh truong bo bang cong tac ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - anh truong bo bang cong tac ((toan cau) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - anh truong bo bang cong tac ((toan cau) or (van ban))*.