Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham luc » cham soc, nhan luc, cham cuu
cua tre » cua te, cuu tre, dua tren
hanh ly » khanh ly, hanh ky, hang ly
va hanh » van hanh, va thanh, va danh
te sach » toc sach
hieu ve » hieu va, hieu van
tang ma » tang van
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 (mang may)) hoi. hieu ve cham luc va hanh ly ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((tang ma) OR (mang may)) hoi. hieu ve cham luc va hanh ly ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((tang ma) or (mang may)) hoi. hieu ve cham luc va hanh ly ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te sach y ((tang ma) or (mang may)) hoi. hieu ve cham luc va hanh ly ((cua tre) OR (cua triet))*.