Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
nam cau » nam cao, nam cac, nam ca
cau ban » can ban, cac ban, cuu ban
ban anh » ban hanh, ban banh, ban danh
anh vi » hanh vi, anh va, anh ve
vi cua » vai cua, di 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 khach)) ty lang xa hoi. hieu van nam cau ban anh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu khach)) ty lang xa hoi. hieu van nam cau ban anh vi cua te*.