Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran ke don snippets" » "trang ke don snippets", "toan ke don snippets", "tran ku don snippets", "tran ke dan snippets", "tran ke do snippets", "tran ke doc 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: (((("tran ke don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran ke don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran ke don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran ke don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.