Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, lieu tinh
thien tinh » khien tinh, thien minh, tien tinh
phuong ban » phuong bang, phuong lan, phuong bac
ca thuong » cao thuong, cua thuong, cp thuong
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap

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 tinh) OR (thien tinh)) - canh tranh ((ca thuong) or (va thuong)) phuong ban than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu tinh) OR (thien tinh)) - canh tranh ((ca thuong) OR (va thuong)) phuong ban than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu tinh) OR (thien tinh)) - canh tranh ((ca thuong) or (va thuong)) phuong ban than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu tinh) OR (thien tinh)) - canh tranh ((ca thuong) or (va thuong)) phuong ban than cau*.