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