Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nan dan dong snippets" » "nan van dong snippets", "nan dan dung snippets", "nan dao dong snippets", "nhan dan dong snippets", "nang dan dong snippets", "ban dan dong 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: (((("nan dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nan dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nan dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nan dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.