Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
phan thanh » pham thanh, ban thanh, van thanh
hoc chinh » hoan chinh, hoc sinh, hoc kinh
hang cong » dang cong, hang nong, bang cong
tranh va » tranh van, trang va, trinh va
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chinh sach - canh tranh va ((nhung cong) or (hang cong)) dan phan thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - canh tranh va ((nhung cong) OR (hang cong)) dan phan thanh.
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - canh tranh va ((nhung cong) or (hang cong)) dan phan thanh*.