Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, song van, cong tan
cong san » cong tac
toan tai » doanh tai, toan ban, toan cao
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chiet tach - canh tranh cua nhung ((cong van) OR (cong san)) ((toan tai) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - canh tranh cua nhung ((cong van) OR (cong san)) ((toan tai) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chiet tach - canh tranh cua nhung ((cong van) OR (cong san)) ((toan tai) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - canh tranh cua nhung ((cong van) OR (cong san)) ((toan tai) or (toan tap))*.