Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhung voi he snippets" » "nhung loi he snippets", "nhung noi he snippets", "nhung doi he snippets", "nhung voi ho snippets", "nhung moi he snippets", "nhung vi he 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 voi he 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 voi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung voi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung voi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.