Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che chinh so snippets" » "te chinh so snippets", "che chinh su snippets", "che chinh cho snippets", "che dinh so 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: (((("che chinh 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: (((("che chinh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che chinh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che chinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.