Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap khoa he snippets" » "lao khoa he snippets", "la khoa he snippets", "luan khoa he snippets", "lap hoa he snippets", "lap khoa hoc snippets", "lap khong he 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: (((("lap khoa he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap khoa he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap khoa he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap khoa he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.