Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan san bo snippets" » "luan van bo snippets", "luan hoan bo snippets", "luan phan bo snippets", "luan san bao snippets", "luan san boa snippets", "luan can bo 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 san bo 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 san bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan san bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan san bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.