Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"thi nang code snippets" » "thi nang co snippets", "thi nang cong snippets", "thi cong code snippets", "ki nang code snippets", "thi hanh code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

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