Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lac mot toan snippets" » "lac mon toan snippets", "lac mot thanh snippets", "lac mot doanh snippets", "la mot toan snippets", "lap mot toan snippets", "lang mot toan 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: (((("lac mot toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lac mot toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lac mot toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lac mot toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.