Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
van thanh » ban thanh, van tuan
phan phan » phap phan, phan phat, than phan
phan cong » thanh cong
doc hieu » hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
gian dan » gian lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) OR (toc thieu)) nganh - van thanh phan phan cong dan gian dan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) nganh - van thanh phan phan cong dan gian dan".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) nganh - van thanh phan phan cong dan gian dan*.