Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
cao duc » cao suc, giao duc, tao duoc
tai cua » thai cua, tai cuc, tri cua
dao duc » giao duc, tao duoc
hieu ve » hieu va, hieu van
sach ly » sach lo, sach ty, sach hay
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ly) or (sach y)) nang x hoi. hieu ve ((cao duc) or (dao duc)) van doanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ly) OR (sach y)) nang x hoi. hieu ve ((cao duc) OR (dao duc)) van doanh tai cua te.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ly) or (sach y)) nang x hoi. hieu ve ((cao duc) or (dao duc)) van doanh tai cua te*.