Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan kim can snippets" » "phan kiem can snippets", "pham kim can snippets", "chan kim can snippets", "phan ki can snippets", "phan kim ngan snippets", "phan kim bang 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 kim can 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 kim can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan kim can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan kim can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.