Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach van » sach han, bach van, cach van
ban hanh » ban hang
thuc ban » thuoc ban, thuc dan, thu ban
vai cua » dai cua, hai cua, lai cua
sach va » sach xa, sach ha, sach dao
nang xa » nang x, lang xa, nang ma
cua te » cua tu
va cam » va cham, va cac, va cao
ve cai » va cai, ve cac, ve tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach van) or (sach va)) nang xa hoi. hieu ((ve cai) or (va cam)) thuc ban hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach van) OR (sach va)) nang xa hoi. hieu ((ve cai) OR (va cam)) thuc ban hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach van) or (sach va)) nang xa hoi. hieu ((ve cai) or (va cam)) thuc ban hanh vai cua te*.