Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat trinh da snippets" » "dan trinh da snippets", "lap trinh da snippets", "dat trong da snippets", "dat trinh dan snippets", "dat trinh dao snippets", "dat trinh do 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: (((("dat trinh 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: (((("dat trinh da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat trinh da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat trinh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.