Perhaps you should try some spelling variations:
"dung phu cung snippets" » "dung phu code snippets", "dung phan cung snippets", "dung cho cung snippets", "dung he cung snippets", "dung phu chung snippets", "dung pha cung snippets", "dung phu hung snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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: (((("dung phu cung snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phu cung snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung phu cung snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phu cung snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.