Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc cach den snippets" » "hoc cac den snippets", "hoc sach den snippets", "cuoc cach den snippets", "hoc cach de snippets", "hoc cach ben snippets", "hoc mach dien 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: (((("hoc cach den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc cach den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc cach den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cach den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.