Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cham luc » cham soc, nhan luc, cham cuu
va triet » va thiet, va trien, ve triet
te sach » toc sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
tang ma » mang may, tang van
va danh » va dinh, va hanh, dia danh
y tang » ky tang, 6 tang, 7 tang
va dan » ca dan, va dao, va dau
ma hoi » mai hoi, xa hoi, ma hoa

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 tang ma hoi. hieu ve cham luc ((va danh) or (va dan)) dau ((va triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang ma hoi. hieu ve cham luc ((va danh) OR (va dan)) dau ((va triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: te sach y tang ma hoi. hieu ve cham luc ((va danh) or (va dan)) dau ((va triet) or (cua viet))*.