Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan minh lo snippets" » "pham minh lo snippets", "phan dinh lo snippets", "phan kinh lo snippets", "phan minh loc snippets", "phan minh loi snippets", "phan minh ly 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 minh lo 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 minh lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan minh lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan minh lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.