Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao dung de snippets" » "lao dung de snippets", "nao dang de snippets", "tao dung de snippets", "nao dung he snippets", "nao dung dat 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: (((("nao dung de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao dung de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao dung de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao dung de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.