Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh san
thanh hoa » thanh pho
cua tre » cua te, cuu tre, cua triet
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. hieu ve ((cam duc) OR (cao duc)) ban ((thanh hai) or (thanh hoa)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ve ((cam duc) OR (cao duc)) ban ((thanh hai) OR (thanh hoa)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ve ((cam duc) OR (cao duc)) ban ((thanh hai) or (thanh hoa)) cua tre*".