Perhaps you should try some spelling variations:
thanh tra » thanh toan, thanh hoa
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
tra cua » trau cua, trua cua, tra cuu
cao duc » dao duc, cao suc, giao duc
su sach » so sach, vu sach
hieu ve » hieu va
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
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: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) ((pham duc) or (cao duc)) van thanh tra cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) ((pham duc) OR (cao duc)) van thanh tra cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. ((hieu ve) OR (hieu van)) ((pham duc) or (cao duc)) van thanh tra cua te".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. ((hieu ve) OR (hieu van)) ((pham duc) or (cao duc)) van thanh tra cua te*.