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