Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quy don toc snippets" » "quy dinh toc snippets", "huy dong toc snippets", "quy dan toc snippets", "quy don thuoc snippets", "quy dong 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: (((("quy don toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quy don toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quy don toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quy don toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.