Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi dau hoan snippets" » "thi dao hoan snippets", "thi cau hoang snippets", "thi cau hoa snippets", "thi dai hoan snippets", "phi dau hoan snippets", "thi dan hoan 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 dau hoan 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 dau hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi dau hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi dau hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.