Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh moi » thanh moi, hanh noi, hanh mot
lang van » dang van, tang van, hoang van
moi cua » hoi cua, doi cua, moi quan
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
mang xa » lang xa, mang may, dang xay
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai

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

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