Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
hang ca » hang va, nang cao, hang tai
duc ban » duc tan, duc van, dua ban
sach ty » sach tu, sach thu, xach tay
ve cac » va cac, vien cac
ve cua » le cua, de cua, te cua
ve cam » ve cham, va cam, ve cai
ca hoi » cau hoi, cua hoi, xa hoi
cua te » cua tu

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) or (sach y)) hang ca hoi. hieu ((ve cam) or (ve cac)) duc ban thanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach y)) hang ca hoi. hieu ((ve cam) OR (ve cac)) duc ban thanh ve cua te.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) or (sach y)) hang ca hoi. hieu ((ve cam) or (ve cac)) duc ban thanh ve cua te*.