Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan lan cao snippets" » "phan lap cao snippets", "phan van cao snippets", "phan loai cao snippets", "phan lang cao snippets", "phan lan cho snippets", "phan nang cao 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: (((("phan lan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan lan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan lan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan lan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.