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