Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thong cong » trong cong, tong cong, thong thong
cong thang » cong thanh, cang thang, cong thong
van thong » van thuong, van phong, va thong
danh van » doanh van, dang van, dinh van
phan lap » phan dau
phan van » pham van, thanh van, luan van

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 - minh danh van thong cong thang ((phan lap) OR (phan van))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc thieu sach - minh danh van thong cong thang ((phan lap) OR (phan van))*".