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