Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
sach van » sach han, sach va, bach van
vien cac » vien bach, vien dai, vien da
tuc ban » thuc ban, truc ban, tu ban
ve cac » va cac
ban xa » ban va, ban ma, ban da
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach van ban xa hoi. hieu ((ve cac) or (vien cac)) tuc ban thanh vai ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach van ban xa hoi. hieu ((ve cac) OR (vien cac)) tuc ban thanh vai ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach van ban xa hoi. hieu ((ve cac) or (vien cac)) tuc ban thanh vai ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thu sach van ban xa hoi. hieu ((ve cac) or (vien cac)) tuc ban thanh vai ((cua te) OR (cua tu))*.