Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha hang hoa snippets" » "pham hang hoa snippets", "nha hang hoa snippets", "pham thang hoa snippets", "pha hang khoa snippets", "pha thanh hoa snippets", "pha 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: (((("pha 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: (((("pha hang hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha hang hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha hang hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.