Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truan doi da snippets" » "truyen doi da snippets", "quan doi da snippets", "khuan doi da snippets", "truan doi dau snippets", "truan doi dam snippets", "truan doi dan 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: (((("truan doi 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: (((("truan doi da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truan doi da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truan doi da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.