Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tra hinh so snippets" » "tra chinh so snippets", "tra linh so snippets", "tra binh so snippets", "tra dinh so snippets", "tra hinh su 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: (((("tra hinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra hinh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tra hinh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra hinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.