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