Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung menh mo snippets" » "dung minh mo snippets", "dinh menh mo snippets", "dung nen mo snippets", "dung menh mot snippets", "dung minh mot 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 menh 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 menh mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung menh mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung menh mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.