Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi phap dot snippets" » "doi phat dot snippets", "gioi phap dot snippets", "hoc phap dot snippets", "doi phap doc snippets", "doi phap dong snippets", "doi phap luot 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: (((("doi phap dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi phap dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi phap dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi phap dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.