Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat cho can snippets" » "chat cho can snippets", "nhat co can snippets", "nhat nheo can snippets", "nhat cho cac snippets", "nhat cho phan snippets", "nhat cho cong 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: (((("nhat cho 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: (((("nhat cho can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat cho can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat cho can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.