Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan phan do snippets" » "ngan han do snippets", "ngan phap do snippets", "ngan thanh do snippets", "ngan phan bo snippets", "ngan phan co snippets", "ngan phan mo 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: (((("ngan phan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngan phan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan phan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan phan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.