Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh hai » thanh hai, nhanh hai, hang hai
so sach » bo sach, co sach, hoc sach
so sanh » do sanh
lang xa » lang ha, dang xay, lang van
qua cam » qua cham, qua cac, qua ca
thuc va » thuc vat, thuc dan, thuc day
hai cua » thai cua, dai cua, hoi cua
y lang » o lang, _ lang, tay lang

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