Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan cau voi snippets" » "quang cao voi snippets", "toan cau voi snippets", "quan ha voi snippets", "quan cau hoi snippets", "quan cau doi snippets", "quan cau noi 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 cau voi 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 cau voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan cau voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan cau voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.