Perhaps you should try some spelling variations:
hanh tram » hanh tam, hanh trang, thanh tran
van hoang » van hoan, quan hoang, tran hoang
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
tram van » tran van, tam van, trang van
cong tac » cong ty
pham lap » phan lap, pham lan, pham gap

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 (25 trieu)) tinh - hanh tram van hoang ((cong san) OR (cong tac)) pham lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (25 trieu)) tinh - hanh tram van hoang ((cong san) OR (cong tac)) pham lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (25 trieu)) tinh - hanh tram van hoang ((cong san) OR (cong tac)) pham lap".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (25 trieu)) tinh - hanh tram van hoang ((cong san) OR (cong tac)) pham lap*.