Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thua thien » thuc hien
trung tuan » trung thanh, tran tuan, truong thanh
dung cong » dung trong
thuat dam » thuat cam, thuat do, thuat xay
ki thuat » ky thuat
cong ki » cong kim, cong khi, cong li

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

• Performing a fuzzy search may retrieve terms with similar spellings: thua thien thanh - thanh ((trung tuan) or (trung tam)) dung cong ki thuat dam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thua thien thanh - thanh ((trung tuan) OR (trung tam)) dung cong ki thuat dam.
• Adding a wildcard symbol may retrieve word variants: thua thien thanh - thanh ((trung tuan) or (trung tam)) dung cong ki thuat dam*.