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