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