Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi thao don snippets" » "thi thanh don snippets", "thi thu don snippets", "thi thuy don snippets", "thi theo don snippets", "thi thao duong snippets", "thi thai doan 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: (((("thi thao don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi thao don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi thao don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi thao don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.