Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
ty tang » tay tang, ty hang, ky tang
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua

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 ((ty tang) or (ty xang)) ma hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty tang) OR (ty xang)) ma hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty tang) or (ty xang)) ma hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty tang) or (ty xang)) ma hoi. hieu ve cam xuc ((va thanh) OR (ban thanh)) vi cua tre*.