Perhaps you should try some spelling variations:
thuoc dieu » thuc dieu, hoc dieu, thuat dieu
nhung cong » dung cong, thong cong, hang cong
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh vi, trinh viet, trinh van
trinh he » trinh han, trinh hoa, trinh thi
cong dan » cong san, cong tan, huong dan
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 va) or (((trinh ve) OR (trinh he)))) nhung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc dieu hanh - hanh ((trinh va) OR (((trinh ve) OR (trinh he)))) nhung cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc dieu hanh - hanh ((trinh va) or (((trinh ve) OR (trinh he)))) nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: thuoc dieu hanh - hanh ((trinh va) or (((trinh ve) OR (trinh he)))) nhung cong dan than cao*.