Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"le doan hon snippets" » "le doat hon snippets", "le doanh hoan snippets", "le doan huong snippets", "le dan hon snippets", "ly doanh hon snippets", "le hoang hon 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: (((("le doan hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("le doan hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( le doan hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("le doan hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.