Perhaps you should try some spelling variations:
ban thanh » ban hang
cham cuu » cap cuu
chat cua » nhat cua, chat va, chat huu
ban hanh » ban hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
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 nang xa hoi. hieu ve ((cham cuu) OR (chat cua)) ((ban thanh) or (ban hanh)) tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. hieu ve ((cham cuu) OR (chat cua)) ((ban thanh) OR (ban hanh)) tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu ve ((cham cuu) OR (chat cua)) ((ban thanh) or (ban hanh)) tai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu ve ((cham cuu) OR (chat cua)) ((ban thanh) or (ban hanh)) tai cua tre*.