Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi doan he snippets" » "thai doan he snippets", "thi hoan he snippets", "thi loan he snippets", "thi toan he snippets", "thi dan he snippets", "thi doan thi 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 doan he 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 doan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi doan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi doan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.