Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan vot con snippets" » "luan von con snippets", "luan tot con snippets", "luan viet con snippets", "luan mot con snippets", "luan vat con snippets", "luan vit con 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 vot con 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 vot con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan vot con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan vot con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.