Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat dan toi snippets" » "hat dan toi snippets", "luat dan toi snippets", "mat bang toi snippets", "mat dan toc snippets", "mat dan thi snippets", "mat van toi 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: (((("mat dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mat dan toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat dan toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat dan toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.