Perhaps you should try some spelling variations:
thanh hang » thanh hoang, thanh thang, tranh hang
hanh trinh » canh tranh, hanh chinh
hang cuong » tang cuong, hang cong, hang cung
cuong tap » luong tap, cong tac, luong tai
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
tap toan » tap doan, tap quan, bai toan
toan ban » van ban
va hang » van hang, va nang, va lang

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 - ((thanh hang) or (hanh trinh)) va hang cuong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (25 trieu)) tinh - ((thanh hang) OR (hanh trinh)) va hang cuong tap toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (25 trieu)) tinh - ((thanh hang) or (hanh trinh)) va hang cuong tap toan ban*.