Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan tu loi snippets" » "danh tu loi snippets", "dan su loi snippets", "ban tu loi snippets", "dan tu doi snippets", "dan tu lai snippets", "dan tu li 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: (((("dan tu loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan tu loi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan tu loi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan tu loi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.