Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan cho ca snippets" » "luan chi ca snippets", "luan che ca snippets", "luan pho ca snippets", "luan cho cac snippets", "luan cho can snippets", "luan cho cay 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: (((("luan cho ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan cho ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan cho ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan cho ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.