Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung so bot snippets" » "dung co bot snippets", "dung mo bot snippets", "dung cho bot snippets", "dung ro bot snippets", "dung so robot 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 so bot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung so bot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung so bot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung so bot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.