Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc sang cua snippets" » "toc san cua snippets", "oc sang cua snippets", "toc mang cua snippets", "toc song cua snippets", "toc hang cua 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 sang cua 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 sang cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc sang cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc sang cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.