Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
tham thuc » nham thuc, pham thuc, tam thuc
va triet » va thiet, va trien, ve triet
qua tham » qua cham, qua than, qua thanh
dang ha » dong ha, dung ha, lang ha
ky dang » ky nang, ky danh
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ha hoi » hoa hoi, ha noi, xa hoi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sanh) OR (do sanh)) ky dang ha hoi. hieu qua tham thuc va hanh vi ((cua triet) OR (va triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sanh) OR (do sanh)) ky dang ha hoi. hieu qua tham thuc va hanh vi ((cua triet) or (va triet))~".
• Adding a wildcard symbol may retrieve word variants: ((so sanh) OR (do sanh)) ky dang ha hoi. hieu qua tham thuc va hanh vi ((cua triet) or (va triet))*.