Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung sua do snippets" » "nhung su do snippets", "nhung lua do snippets", "nhung mua do snippets", "nhung sua doi 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 sua 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: (((("nhung sua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung sua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung sua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.