Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan nam co snippets" » "pham nam co snippets", "nhan nam co snippets", "phan cam co snippets", "phan nam cao snippets", "phan nam bo snippets", "phan nam so 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 nam co 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 nam co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan nam co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan nam co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.