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"
"dong cua code snippets" » "dung cua code snippets", "cong cua code snippets", "huong cua code snippets", "dong cua cong snippets", "dong cua co snippets", "dong cfd code snippets", "dong cua 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 ("dong cua 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 ("dong cua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han ping java snippets ) or ( dong cua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han ping java snippets") or ("dong cua code snippets"))) or ("locating bug code snippets"))*.