Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan kai he snippets" » "phan dai he snippets", "phan bai he snippets", "phan hai he snippets", "phan tai he snippets", "phan kai chen 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 kai he 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 kai he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan kai he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan kai he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.