Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap cong dot snippets" » "phap cong dot snippets", "nhap cong dot snippets", "tap cong dot snippets", "hap cong mot snippets", "hap cong dong snippets", "hap cong doan 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: (((("hap cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hap cong dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap cong dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.