Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
van thanh » ban thanh, van tuan
thanh ban » thanh san, thanh van, thanh bac
cong van » cong vang, cong san, song van
hoc thi » hoc thai, hoc tai, hoc chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thi) or (toc thai)) thanh - canh tranh cua nhung cong van thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thi) OR (toc thai)) thanh - canh tranh cua nhung cong van thanh ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thi) or (toc thai)) thanh - canh tranh cua nhung cong van thanh ban*.