Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » thong cong, hang cong, nhung lang
nhung don » nhung van, nhung bo
dung cong » dung trong
than phan » thanh phan, toan phan, thanh pham
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va

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

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