Perhaps you should try some spelling variations:
thanh gia » thanh gian, thanh giang, thanh nghia
hieu vien » hieu hien, hieu viec, thieu nien
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma
cac duc » cac du, cac dac, cac nuoc
cua tre » cua te, cua triet, dua tren
cao duc » dao duc, cao suc, giao duc
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky

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

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