Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi hai hoan snippets" » "thi khai hoan snippets", "thi hai hoa snippets", "thi thai hoang snippets", "thi mai hoan snippets", "thi hanh 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 hai 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 hai hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi hai hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi hai hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.