Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham luc » cham soc, nhan luc, cham cuu
tang van » dang van, hoang van, trong van
dinh dau » dinh dat, dinh du, danh dau
va dinh » van dinh, va kinh, va tinh
te sach » toc sach
hieu ve » hieu va, hieu van
tang ma » mang may
ve cham » va cham, ve chat, vu cham
luc va » duc va, tuc va, loc 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 ((tang ma) or (tang van)) hoi. hieu ve cham luc va dinh dau ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (tang van)) hoi. hieu ve cham luc va dinh dau ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((tang ma) or (tang van)) hoi. hieu ve cham luc va dinh dau ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (tang van)) hoi. hieu ve cham luc va dinh dau ((cua triet) OR (cua viet))*.