Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
truc van » truc va, thuc van, truc ban
bach van » bach dan, cach van, bach dang
su bach » vu bach, su sach, huu bach
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
ve cau » ke cau, va cau, ve cac
ve cua » le cua, te cua, ve cum
de cua » le cua, te cua, dieu cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su bach van ((nang xa) OR (lang xa)) hoi. hieu ve cau truc van thanh ((ve cua) OR (de cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su bach van ((nang xa) OR (lang xa)) hoi. hieu ve cau truc van thanh ((ve cua) or (de cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: su bach van ((nang xa) OR (lang xa)) hoi. hieu ve cau truc van thanh ((ve cua) or (de cua)) tre*.