Perhaps you should try some spelling variations:
thanh tung » thanh cong
khong tang » khong cang, khong thanh, khong trong
lieu tinh » trieu tinh, diep tinh, bien tinh
cua khong » hua khong, cua phuong, cua thuong
tung cua » trung cua, tuong cua, dung cua
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
so lieu » so dieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so lieu tinh - thanh tung cua khong tang ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so lieu tinh - thanh tung cua khong tang ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: so lieu tinh - thanh tung cua khong tang ((dan toan) or (dan than)) cau*.