Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
cap thong » chap thuong, phap thong, chap phong
cong lang » cong vang, cong luong, cong quang
cap tong » cap nong, cap hoang, gap trong
cong san » cong tac

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 - thanh trung ((cap thong) OR (cap tong)) ((cong san) or (cong lang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh trung ((cap thong) OR (cap tong)) ((cong san) OR (cong lang)) van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh trung ((cap thong) OR (cap tong)) ((cong san) or (cong lang)) van ban*".