Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh van » thanh san, thanh toan, thanh phan
va thanh » gia thanh, ban thanh, va tinh
thu sach » tu sach, thuat sach, thuoc sach
vang xa » lang xa, mang xa, ang xa
cua tre » cua te, cuu tre, dua tren
va tham » van tham, va cham, va thuat
va cam » va cham, va cac, va cao
y vang » ly vang
loc va » hoc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y vang xa hoi. hieu ((va cam) or (va tham)) loc va thanh van ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y vang xa hoi. hieu ((va cam) OR (va tham)) loc va thanh van ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y vang xa hoi. hieu ((va cam) or (va tham)) loc va thanh van ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: thu sach y vang xa hoi. hieu ((va cam) or (va tham)) loc va thanh van ((cua tre) OR (cua triet))*.