Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
chinh can » chinh ca, chinh cau, chinh ngan
chinh ban » chinh bao, chinh ngan, chinh luan
cua hang » cua dang, cua nhung, cua cong
cong van » cong vang, cong san, song van

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 tung) or (thanh cong)) cua hang cong van ((chinh can) OR (chinh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((thanh tung) OR (thanh cong)) cua hang cong van ((chinh can) OR (chinh ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - ((thanh tung) or (thanh cong)) cua hang cong van ((chinh can) OR (chinh ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((thanh tung) or (thanh cong)) cua hang cong van ((chinh can) OR (chinh ban))*.