Perhaps you should try some spelling variations:
"han ping java snippets" » "han using java snippets", "shan ding java snippets", "han tong java snippets", "han ung java snippets", "han ping java slippers"
"cong cau code snippets" » "cong cu code snippets", "cong chuc code snippets", "thong cau code snippets", "cong cau cong snippets", "cong cau de snippets", "cong cfd code snippets", "cong cau code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("han ping java snippets") or ("cong cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han ping java snippets") OR ("cong cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han ping java snippets ) or ( cong cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han ping java snippets") or ("cong cau code snippets"))) or ("locating bug code snippets"))*.