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