Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son luat can snippets" » "toan luat can snippets", "bo luat can snippets", "son la can snippets", "son luat canh snippets", "son luat dan snippets", "son luat ban 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: (((("son luat 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: (((("son luat can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son luat can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son luat can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.