Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan con toi snippets" » "nhan co toi snippets", "nhanh cong toi snippets", "phan cong toi snippets", "nhan con coi snippets", "nhan con trai 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: (((("nhan con toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan con toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan con toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan con toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.