Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai hang hoa snippets" » "thai hang hoa snippets", "hai bang hoa snippets", "hai dang hoa snippets", "hai hang khoa snippets", "hai thanh hoa snippets", "hai hang va 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: (((("hai hang hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai hang hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai hang hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai hang hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.