Perhaps you should try some spelling variations:
cao thuc » cao thuoc, bao thuc, can thuc
va triet » va thiet, va trien, ve triet
so sach » so sanh, co sach, hoc sach
bo sach » co sach, hoc sach
qua cao » qua cac, qua ca, qua cai
thuc va » thuc vat, thuc dan, thuc day
va hang » van hang, va nang, va lang
hang vi » hang va, hanh vi, hang di
y lang » o lang, tay lang, yen lang
_ lang » o lang, _ land
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (bo sach)) ((y lang) or (_ lang)) xa hoi. hieu qua cao thuc va hang vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ((y lang) OR (_ lang)) xa hoi. hieu qua cao thuc va hang vi va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ((y lang) or (_ lang)) xa hoi. hieu qua cao thuc va hang vi va triet*".