Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
anh truong » manh truong, anh thuong, tang truong
anh trong » anh thuong, dinh trong, lang trong
bang cong » dang cong, bang song, hang cong
cong tac » cong ty
toan ban » van ban
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) OR (anh trong)) bo bang cong tac ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - ((anh truong) OR (anh trong)) bo bang cong tac ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sach - ((anh truong) OR (anh trong)) bo bang cong tac ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - ((anh truong) OR (anh trong)) bo bang cong tac ((toan tap) or (toan ban))*.