Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi phap coc snippets" » "doi phat coc snippets", "gioi phap coc snippets", "hoc phap coc snippets", "doi phap hoc snippets", "doi phap cac snippets", "doi phap doc 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 coc 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 coc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi phap coc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi phap coc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.