Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
cua tre » cua te, cuu tre, dua tren
va dinh » van dinh, va kinh, va tinh
su sach » so sach, vu sach
lang ha » long ha
hieu ve » hieu va, hieu van
y lang » o lang, _ lang, tay lang
ve nam » he nam, va nam, le nam
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang ha hoi. hieu ve nam thuc ((va dinh) or (may tinh)) thai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang ha hoi. hieu ve nam thuc ((va dinh) OR (may tinh)) thai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y lang ha hoi. hieu ve nam thuc ((va dinh) or (may tinh)) thai ((cua tre) OR (cua triet))*".