Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhu van o snippets" » "nha van o snippets", "chu van o snippets", "ngu van o snippets", "nhu van do snippets", "nhu van ho snippets", "nhu van co 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: (((("nhu van o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhu van o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhu van o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhu van o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.