Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, tiep danh
thien dang » thien bang, thien danh, thien nang
ninh thanh » dinh thanh, tinh thanh, hinh thanh
minh thang » minh hang, minh trang, dinh thang
dong thanh » truong thanh
thanh phan » thanh pho, thanh san, thanh toan
thuc dung » thuoc dung, thuy dung, tuc dung
dung dong » dung cong, vung dong, dung trong
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet danh) or (thien dang)) - ((ninh thanh) or (minh thang)) thuc dung dong thanh phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet danh) OR (thien dang)) - ((ninh thanh) OR (minh thang)) thuc dung dong thanh phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet danh) or (thien dang)) - ((ninh thanh) or (minh thang)) thuc dung dong thanh phan cac*.