Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
trang tam » trung tam, thang tam, trang tai
tam trong » nam trong, lam trong, pham trong
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
cong san » cong tac
chan cao » chan cho, chat cao, toan cao
chay cao » cay cao, chat cao, nha cao

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 trang tam trong cong san ((chan cao) or (chay cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (30 trieu)) tinh - hanh trang tam trong cong san ((chan cao) OR (chay cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - hanh trang tam trong cong san ((chan cao) or (chay cao))".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - hanh trang tam trong cong san ((chan cao) or (chay cao))*.