Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cu luat so snippets" » "cua luat so snippets", "cuu luat so snippets", "cu luan so snippets", "cu thuat so snippets", "cu luat bao 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: (((("cu luat 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: (((("cu luat so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cu luat so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cu luat so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.