Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh ve » hanh ve, thanh va, thanh vien
sach vu » sach tu, sach uu, sach xu
vuc van » duc van, luc van, thuc van
va cham » va chat, va tham
su tien » su kien, su hien, tu tieng
sach va » sach xa, sach ha, sach dao
va cam » va cac, va cao, va cai
x hoi » xa hoi, o hoi, x ho
ve su » va su

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 vu) OR (sach va)) nang x hoi. hieu ((va cam) or (va cham)) vuc van thanh ve su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach vu) OR (sach va)) nang x hoi. hieu ((va cam) OR (va cham)) vuc van thanh ve su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach vu) OR (sach va)) nang x hoi. hieu ((va cam) or (va cham)) vuc van thanh ve su tien".
• Adding a wildcard symbol may retrieve word variants: thu ((sach vu) OR (sach va)) nang x hoi. hieu ((va cam) or (va cham)) vuc van thanh ve su tien*.