Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
dung cuong » dung cong, dung luong, dang cuong
bang than » bang thanh, ban than, bang nhan
sang than » cang thang, dang thanh, sang tao
ho chieu » hoc thieu, doi chieu, mot chieu
tung va » trung va, tuong va, dung va
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) tinh - thanh tung va dung cuong ((bang than) OR (sang than)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - thanh tung va dung cuong ((bang than) OR (sang than)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) tinh - thanh tung va dung cuong ((bang than) OR (sang than)) cap".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - thanh tung va dung cuong ((bang than) OR (sang than)) cap*.