Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan day den snippets" » "luan dac den snippets", "luan xay den snippets", "luat day den snippets", "luan dan den snippets", "luan dao den snippets", "luan day dan 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 day den 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 day den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan day den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan day den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.