Perhaps you should try some spelling variations:
ban danh » ban doanh, ban hanh, ban dan
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, te sach, tu cach
danh di » danh du, xanh di, danh dien
cuu ban » cuu van, cua ban, cuu san
nam cuu » nam cua, nam suu, nam cau
lang xa » lang ha, dang xay, lang van
ty lang » tay lang, ty xang, ty hang
su sach » so sach
vu sach » vu bach, vu khach
di cua » dai cua, doi cua, de cua
cua te » cua tu

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) OR (((vu sach) OR (su sach)))) ty lang xa hoi. hieu van nam cuu ban danh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (((vu sach) OR (su sach)))) ty lang xa hoi. hieu van nam cuu ban danh di cua te~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (((vu sach) OR (su sach)))) ty lang xa hoi. hieu van nam cuu ban danh di cua te*.