Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » thong cong, nhung don, nhung lang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh tranh cua ((((nhung cong) OR (hang cong))) OR (dung cong)) dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - canh tranh cua ((((nhung cong) OR (hang cong))) or (dung cong)) dan than cao~".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - canh tranh cua ((((nhung cong) OR (hang cong))) or (dung cong)) dan than cao*.