Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
va triet » va thiet, va trien, ve triet
tu bach » vu bach, tu cach, tu bac
bach ho » bach hoa, bac ho, bach ha
ho nang » thi nang, kha nang, cao nang
hanh di » hanh vi, hang di, danh di
hanh de » hanh ve, hanh kem
va nam » van nam, va nay
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu bach ho nang x hoi. lieu ((va nam) OR (ha nam)) thuc dan ((hanh di) or (hanh de)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu bach ho nang x hoi. lieu ((va nam) OR (ha nam)) thuc dan ((hanh di) OR (hanh de)) va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu bach ho nang x hoi. lieu ((va nam) OR (ha nam)) thuc dan ((hanh di) or (hanh de)) va triet".
• Adding a wildcard symbol may retrieve word variants: tu bach ho nang x hoi. lieu ((va nam) OR (ha nam)) thuc dan ((hanh di) or (hanh de)) va triet*.