Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua toan von snippets" » "cua toan von snippets", "qua tan von snippets", "qua than von snippets", "qua toan ban snippets", "qua toan 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 toan von 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 toan von snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua toan von snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua toan von snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.