Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cham duc » pham duc, cham soc, pham duy
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
may hoi » may thoi, tay hoi, may hmi
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dan dau » danh dau, doan dau, van dau
y mang » cay mang
va dan » ca dan, va dao, va dau

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 ((may hoi) or (mai hoi)). hieu ve cham duc va dan dau ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y mang ((may hoi) OR (mai hoi)). hieu ve cham duc va dan dau ((cua triet) OR (cua viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y mang ((may hoi) or (mai hoi)). hieu ve cham duc va dan dau ((cua triet) OR (cua viet))*".