Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nganh hai
nhanh ha » thanh hoa, thanh hai, khanh hoa
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
su sac » su sach, su cac, su xac
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: su sac ky lang xa hoi. hieu ve ((cam duc) or (cao duc)) ban ((nhanh hai) OR (nhanh ha)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky lang xa hoi. hieu ve ((cam duc) OR (cao duc)) ban ((nhanh hai) OR (nhanh ha)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky lang xa hoi. hieu ve ((cam duc) or (cao duc)) ban ((nhanh hai) OR (nhanh ha)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky lang xa hoi. hieu ve ((cam duc) or (cao duc)) ban ((nhanh hai) OR (nhanh ha)) cua tre*.