Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan cang he snippets" » "phan cong he snippets", "phan dang he snippets", "phan cung he snippets", "phan bang he snippets", "phan nang he snippets", "phan cang thi 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 cang 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 cang he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan cang he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan cang he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.