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