Perhaps you should try some spelling variations:
"dung phan song snippets" » "dung phan code snippets", "dung nhan song snippets", "dung luan song snippets", "dung ha song snippets", "dung phan cong snippets", "dung phan xuong snippets", "dung phan ung 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 phan song 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 phan song snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung phan song snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phan song snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.