Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"using va dong snippets" » "using a dong snippets", "using java dong snippets", "using raw dong snippets", "using van dong snippets", "using ha dong snippets", "using xa dong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("using va dong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using va dong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using va dong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using va dong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.