Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
cua thuong » cua truong, cua phuong, ca thuong
cua khong » hua khong, cua phuong, cua cong
xuong dan » huong dan, xuong san, tuong dan
thanh lap » thanh san, phan lap, thanh hai
khoan cam » khoa cam, khoan va, phan cam
ho chieu » theo chieu, hoc thieu, doi chieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - thanh tung ((cua khong) OR (cua thuong)) xuong dan ((thanh lap) OR (khoan cam))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - thanh tung ((cua khong) OR (cua thuong)) xuong dan ((thanh lap) or (khoan cam))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - thanh tung ((cua khong) OR (cua thuong)) xuong dan ((thanh lap) or (khoan cam))*.