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