Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su cach » su sach, tu cach, su cac
cach tu » cach thuc
tu nano » truc nano
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
ca viet » va viet, co viet, hoa viet
soc va » hoc va, loc va, doc va
1 ho » 1 ha, 1 h, 1 so

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cach tu nano ((1 ho) OR (x ho)). hieu ve cham soc va hanh vi ((cua triet) or (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cach tu nano ((1 ho) OR (x ho)). hieu ve cham soc va hanh vi ((cua triet) OR (ca viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cach tu nano ((1 ho) OR (x ho)). hieu ve cham soc va hanh vi ((cua triet) or (ca viet))".
• Adding a wildcard symbol may retrieve word variants: su cach tu nano ((1 ho) OR (x ho)). hieu ve cham soc va hanh vi ((cua triet) or (ca viet))*.