Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don ca nghe snippets" » "don cap nghe snippets", "don cua nghe snippets", "don cac nghe snippets", "dan ca nghe snippets", "don va nghe snippets", "don ha nghe 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: (((("don ca nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don ca nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don ca nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don ca nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.