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