Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
ca thuong » cao thuong, cua thuong, va thuong
thuat cao » thuat co, thuat bao, thuat cam
dong tan » duong tan, dong tai, cong tan
dong san » cong san, dong bang, dong von
than cao » toan cao, thai cao, than cap
tung ca » trung ca, tang ca, cung ca

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 ca thuong ((dong tan) OR (dong san)) ((than cao) or (thuat cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung ca thuong ((dong tan) OR (dong san)) ((than cao) OR (thuat cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh tung ca thuong ((dong tan) OR (dong san)) ((than cao) or (thuat cao))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung ca thuong ((dong tan) OR (dong san)) ((than cao) or (thuat cao))*.