Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cong luong » cong thuong, nang luong, cong dong
hoc thieu » toc thieu, hoc hien
manh tung » manh hung, thanh tung
dap nhung » vap nhung, va nhung, dap ung
cong lang » cong vang, cong quang, cong ngang
tung dap » tung dan, trung dai, tuong dan
ban ban » ban banh, van ban, ban dan
can ban » van ban, toan ban

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 tung dap nhung ((cong lang) OR (cong luong)) ((ban ban) or (can ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - manh tung dap nhung ((cong lang) OR (cong luong)) ((ban ban) OR (can ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - manh tung dap nhung ((cong lang) OR (cong luong)) ((ban ban) or (can ban))*".