Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
thang cong » thanh cong, thang long, thong cong
hieu lang » chieu sang, hieu quang, nhieu tang
hanh luan » khanh luan, hang luan, hanh luat
van thang » van thanh, van khang, van hang
dan thanh » dang thanh, danh thanh, ban thanh
hieu van » hieu va, thien van, lieu va
cong dan » cong san, cong tan, huong dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((hieu van) OR (hieu lang)) - hanh luan van thang cong dan thanh phan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((hieu van) OR (hieu lang)) - hanh luan van thang cong dan thanh phan*".