Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc vien tue snippets" » "hoc vien tue snippets", "toc viet tue snippets", "toc mien tue snippets", "toc dien tu snippets", "toc tien te snippets", "toc hien tu 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 vien tue 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 vien tue snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc vien tue snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc vien tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.