Perhaps you should try some spelling variations:
ban hanh » ban hang
vu sach » vu bach, su sach, vu khach
sach ly » sach y, sach lo, sach ty
ly lang » ly hang, ly vang, le lang
lang da » lang dai, lang ha, lang xa
hieu va » hieu qua
xuc ban » duc ban, cuc ban, quoc ban
cua duc » cua tuc, cua nuoc, cua quoc
vi cua » vai cua, di cua

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: vu sach ly lang da khoa. ((hieu va) OR (lieu va)) cam xuc ban hanh vi cua duc~.
• Adding a wildcard symbol may retrieve word variants: vu sach ly lang da khoa. ((hieu va) or (lieu va)) cam xuc ban hanh vi cua duc*.