Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi cua hon snippets" » "phi cua code snippets", "phai cua hon snippets", "chi cua hon snippets", "khi cua hon snippets", "phi cua hoi snippets", "phi cua hoc snippets", "phi ca hon snippets"
"python using java snippets" » "python using data 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: (((("phi cua hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi cua hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phi cua hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi cua hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.