Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vuon toi da snippets" » "vuong thi da snippets", "huong toi da snippets", "vuot troi da snippets", "vuon toi la snippets", "vuon thoi dai 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: (((("vuon toi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vuon toi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vuon toi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuon toi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.