Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dao hoi snippets" » "nam dan hoi snippets", "nam sao hoi snippets", "nam cao hoi snippets", "nam dao thoi snippets", "nam dai hoi snippets", "nam dao ho 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: (((("nam dao hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam dao hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dao hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dao hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.