Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan co chin snippets" » "phan bo chin snippets", "phan cong chin snippets", "phan cac chin snippets", "phan cho chinh snippets", "phan do chinh snippets", "phan co chang 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 co chin 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 co chin snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan co chin snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan co chin snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.