Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc minh can snippets" » "toc kinh can snippets", "toc xinh can snippets", "ngoc minh can snippets", "toc minh chanh snippets", "toc minh danh snippets", "toc minh tuan 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 minh can 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 minh can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc minh can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc minh can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.