Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
truong cao » truong dai
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc hien
cao hang » cao dang, cao tang, cao bang
dan than » dan chan, ban than, van than

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (hoc thieu)) sach - thanh truong cao hang cong ((xuan toan) or (dan than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sach - thanh truong cao hang cong ((xuan toan) OR (dan than)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) sach - thanh truong cao hang cong ((xuan toan) or (dan than)) cao".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc thieu)) sach - thanh truong cao hang cong ((xuan toan) or (dan than)) cao*.