Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chau tinh » cuu tinh, cua tinh, cac tinh
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
tan phan » toan phan, than phan, van phan
phan lap » phan dau
ha tinh » va tinh, may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chau tinh) or (ha tinh)) - canh tranh va ((nhung cong) OR (dung cong)) tan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chau tinh) OR (ha tinh)) - canh tranh va ((nhung cong) OR (dung cong)) tan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chau tinh) or (ha tinh)) - canh tranh va ((nhung cong) OR (dung cong)) tan phan lap".
• Adding a wildcard symbol may retrieve word variants: ho ((chau tinh) or (ha tinh)) - canh tranh va ((nhung cong) OR (dung cong)) tan phan lap*.