Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
nhung cong » dung cong, thong cong, hang cong
trinh vi » trinh ve, trinh viet, trinh van
trinh va » trinh van, trinh vat, trinh ve
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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 ((trinh vi) OR (trinh va)) ((nhung cong) or (nhung phuong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc dieu hanh - hanh ((trinh vi) OR (trinh va)) ((nhung cong) OR (nhung phuong)) dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc dieu hanh - hanh ((trinh vi) OR (trinh va)) ((nhung cong) or (nhung phuong)) dan than cao".
• Adding a wildcard symbol may retrieve word variants: thuoc dieu hanh - hanh ((trinh vi) OR (trinh va)) ((nhung cong) or (nhung phuong)) dan than cao*.