Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cua hon snippets" » "van cua code snippets", "vang cua hon snippets", "ban cua hon snippets", "dan cua hon snippets", "van cua hoi snippets", "van cua hoc snippets", "van 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: (((("van 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: (((("van cua hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van cua hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van cua hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.