Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
manh nhung » manh hung, anh nhung, canh nhung
hoc thieu » toc thieu, hoc hien
ba nhung » ban nhung, va nhung, bo nhung
cong san » cong tac
toan tap » toan ban
ba hung » van hung, ba trung, mai hung

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 - manh nhung ((ba nhung) OR (ba hung)) ((cong san) or (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - manh nhung ((ba nhung) OR (ba hung)) ((cong san) OR (huong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - manh nhung ((ba nhung) OR (ba hung)) ((cong san) or (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - manh nhung ((ba nhung) OR (ba hung)) ((cong san) or (huong dan)) toan tap*.