Perhaps you should try some spelling variations:
thiet danh » thien danh, thien anh, thien dang
minh thanh » dinh thanh, tinh thanh, hinh thanh
cong thanh » dong thanh, cong trinh, cong tan
thanh phan » thanh pho, thanh san, thanh toan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thuc dung » thuoc dung, thuy dung, tuc dung
dung cong » dung trong
phan lap » phan dau

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 - ((benh nhan) or (minh thanh)) thuc dung cong thanh phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet danh - ((benh nhan) OR (minh thanh)) thuc dung cong thanh phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc thiet danh - ((benh nhan) or (minh thanh)) thuc dung cong thanh phan lap*.