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