Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"qua khai doi snippets" » "qua hai doi snippets", "quang khai doi snippets", "quan hai doi snippets", "qua khi doi snippets", "qua thai doi snippets", "qua khuan doi 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 khai doi 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 khai doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( qua khai doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("qua khai doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.