Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran ke do snippets" » "trang ke do snippets", "toan ke do snippets", "tran ku do snippets", "tran ke o snippets", "tran ke co snippets", "tran ke mo 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 do 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 do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran ke do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran ke do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.