Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong nhan da snippets" » "cong nhan code snippets", "cong nhat da snippets", "cong thanh da snippets", "cong san da snippets", "cong nhan dan snippets", "cong nhan dai snippets", "cong nhan dat 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: (((("python using java snippets") or ("cong nhan da snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cong nhan da snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cong nhan da snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cong nhan da snippets"))) or ("locating bug core snippets"))*.