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