Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc cua moi snippets" » "hoc cua moi snippets", "tac cua moi snippets", "doc cua moi snippets", "toc cua mot snippets", "toc cua hoi 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 cua moi 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 cua moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc cua moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc cua moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.