Perhaps you should try some spelling variations:
sach van » sach han, sach va, bach van
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
ban xa » ban va, ban ma, ban da
ve cac » va cac
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
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: tu sach van ban xa hoi. hieu ((ve cac) or (vien cac)) tuc va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach van ban xa hoi. hieu ((ve cac) OR (vien cac)) tuc va thanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach van ban xa hoi. hieu ((ve cac) or (vien cac)) tuc va thanh vi cua te*.