Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam ha hoc snippets" » "nam a hoc snippets", "nam va hoc snippets", "nam da hoc snippets", "nam hoa hoc snippets", "nam nha hoc 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: (((("nam ha hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam ha hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam ha hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam ha hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.