Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan lai roi snippets" » "phan loai roi snippets", "phan lap roi snippets", "phan lan roi snippets", "phan lai hoi snippets", "phan loi roi 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 lai roi 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 lai roi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan lai roi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan lai roi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.