Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc tre can snippets" » "thuc te can snippets", "thuoc tren can snippets", "thuc tien can snippets", "thuc tre dan snippets", "thuc tiep can snippets", "thuc tiem 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: (((("thuc tre 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: (((("thuc tre can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc tre can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc tre can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.