Perhaps you should try some spelling variations:
hanh dong » anh dong, ha dong
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
nhan tai » hang tai, toan tai
dong su » dang su, dong tu, dong luc
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho trieu) OR (30 trieu)) tinh - hanh dong su dung cong vang ((nhan tai) or (van tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - hanh dong su dung cong vang ((nhan tai) OR (van tai))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - hanh dong su dung cong vang ((nhan tai) or (van tai))*".