Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong phan lon snippets" » "dung phan lon snippets", "cong phan lon snippets", "dong chan lon snippets", "dong phan bon snippets", "dong phan lan snippets", "dong han lon 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: (((("dung java java snippets") or ("dong phan lon snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong phan lon snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong phan lon snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong phan lon snippets"))) or ("locating bug code snippets"))*.