Perhaps you should try some spelling variations:
kham luc » khai luoc, kham cuoc, than luc
nhan luc » nang luc
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
anh va » hanh va
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu cac)) ky nang xa hoi. hieu ve ((kham luc) OR (nhan luc)) van anh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu cac)) ky nang xa hoi. hieu ve ((kham luc) OR (nhan luc)) van anh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu san) or (tu cac)) ky nang xa hoi. hieu ve ((kham luc) OR (nhan luc)) van anh va cua tre*".