Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
vu sach » vu bach, su sach, vu khach
vai cua » dai cua, hai cua, lai cua
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
van hoc » van hoa
van hoi » van hoa, van hoe, van loi
y dang » ky dang, 2 dang, _ dang
cham o » cham soc
vi cua » di cua
o ban » co ban, lo ban, do ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y dang ((van hoi) or (van hoc)). hieu ve cham o ban thanh ((vi cua) or (vai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y dang ((van hoi) OR (van hoc)). hieu ve cham o ban thanh ((vi cua) OR (vai cua)) te.
• Adding a wildcard symbol may retrieve word variants: vu sach y dang ((van hoi) or (van hoc)). hieu ve cham o ban thanh ((vi cua) or (vai cua)) te*.