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