Perhaps you should try some spelling variations:
ban doanh » van doanh, san doanh, ban danh
doanh hai » doanh tai, doan hai, doanh ha
sach kem » hanh kem
dung cac » luong cac, dung cho, dung tai
cac phoi » cac thoi, cac khoi, cap phoi
sach ty » sach tu, sach thu, xach tay
hieu va » lieu va, hieu qua
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
hai cua » thai cua, dai cua, hoi cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((((sach kem) or (sach y))) or (sach ty)) dung cac phoi. hieu va cac duc ban doanh hai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach kem) OR (sach y))) OR (sach ty)) dung cac phoi. hieu va cac duc ban doanh hai cua vat.
• Adding a wildcard symbol may retrieve word variants: su ((((sach kem) or (sach y))) or (sach ty)) dung cac phoi. hieu va cac duc ban doanh hai cua vat*.