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