Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghi su can snippets" » "nghi tu can snippets", "nghiem su can snippets", "nghia tu can snippets", "nghi su van snippets", "nghi su cao snippets", "nghi su han 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 su can 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 su can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghi su can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghi su can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.