Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung ninh de snippets" » "dung ninh code snippets", "dung vinh de snippets", "quang ninh de snippets", "dung dich de snippets", "dung sinh de snippets", "dung minh de snippets", "dung ninh duc 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: (((("dung ninh de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ninh de snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung ninh de snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ninh de snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.