Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghi tu le snippets" » "nghia tu le snippets", "nghi thuc le snippets", "nghiep tu le snippets", "nghi vu le snippets", "nghi tu te 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: (((("nghi tu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghi tu le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghi tu le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghi tu le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.