Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, tien thanh
trung tuan » trung thanh, trung tam, tran tuan
thuc hien » hoc hien
trung cap » truong cao, trung tam
dung cong » dung trong
thuat dam » thuat cam, thuat do, thuat xay
cong ky » cuong ky, cong ty, hong ky

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

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