Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
hanh tang » hanh trang, hanh mang, hanh tung
hang cong » dang cong, hang nong, bang cong
thanh tra » thanh toan, thanh hoa
anh tang » anh bang, anh dang, anh nang
tra cuu » tra cau, trau cua, trua cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc dieu hanh - ((hanh tang) OR (anh tang)) va ((nhung cong) or (hang cong)) thanh tra cuu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc dieu hanh - ((hanh tang) OR (anh tang)) va ((nhung cong) OR (hang cong)) thanh tra cuu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc dieu hanh - ((hanh tang) OR (anh tang)) va ((nhung cong) or (hang cong)) thanh tra cuu".
• Adding a wildcard symbol may retrieve word variants: thuoc dieu hanh - ((hanh tang) OR (anh tang)) va ((nhung cong) or (hang cong)) thanh tra cuu*.