Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van co cua snippets" » "van co code snippets", "van cho cua snippets", "ban co cua snippets", "san co cua snippets", "van con cua snippets", "van ca cua snippets", "van cong cua snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van co cua 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 co cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van co cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van co cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.