Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh tra » thanh toan, thanh hoa
sach doi » sach hoi, sach moi, sach dao
cao duc » dao duc, cao suc, giao duc
tra cua » trau cua, trua cua, tra cuu
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
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 ly) or (sach doi)) nang xa hoi. hieu ve ((pham duc) or (cao duc)) van thanh tra cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach doi)) nang xa hoi. hieu ve ((pham duc) OR (cao duc)) van thanh tra cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach doi)) nang xa hoi. hieu ve ((pham duc) or (cao duc)) van thanh tra cua te*.