Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc khoe doi snippets" » "toc kho doi snippets", "suc khoe doi snippets", "hoc khoa doi snippets", "toc khoe moi snippets", "toc khoa doi snippets", "toc cho doi 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: (((("toc khoe doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc khoe doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc khoe doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc khoe doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.