Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
hang dau » hang va, hang tai
cham luc » nhan luc, cham cuu, chat lua
may thoi » gay thoi, may thi, tay thoi
va hang » van hang, va nang, va lang
te sach » toc sach
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
y mang » cay mang
dau va » dau ve, lau va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y mang ((mai hoi) or (may thoi)). hieu ve ((cham luc) OR (cham soc)) va hang dau va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y mang ((mai hoi) OR (may thoi)). hieu ve ((cham luc) OR (cham soc)) va hang dau va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y mang ((mai hoi) or (may thoi)). hieu ve ((cham luc) OR (cham soc)) va hang dau va triet".
• Adding a wildcard symbol may retrieve word variants: te sach y mang ((mai hoi) or (may thoi)). hieu ve ((cham luc) OR (cham soc)) va hang dau va triet*.