Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
cua triet » cua viet, su triet, va triet
sang ma » tang ma, nang ma, sang tao
luc van » luoc van, luu van, duc van
danh di » danh du, xanh di, danh dien
dinh di » dinh du, dinh vi, dinh da
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa
ve cau » ke cau, va cau, le cau
ve cac » va cac, vien cac

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: nuoc sach y sang ma hoi. hieu ((ve cau) OR (ve cac)) luc van ((dinh di) OR (danh di)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach y sang ma hoi. hieu ((ve cau) or (ve cac)) luc van ((dinh di) OR (danh di)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: nuoc sach y sang ma hoi. hieu ((ve cau) or (ve cac)) luc van ((dinh di) OR (danh di)) cua triet*.