Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van cong toc snippets" » "van cong code snippets", "van dong toc snippets", "van phong toc snippets", "phan cong toc snippets", "van cong tac snippets", "van cong coc snippets", "van cong uoc 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 cong toc 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 cong toc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van cong toc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van cong toc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.