Perhaps you should try some spelling variations:
khong xuong » khong dung, hong vuong, thong duong
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh tung » thanh cong
cua khong » hua khong, cua phuong, cua thuong
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
tung cua » trung cua, tuong cua, dung cua

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 xuong dan ((thanh lap) OR (khoan cam))~.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - thanh tung cua khong xuong dan ((thanh lap) or (khoan cam))*.