Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho han lee snippets" » "cho phan lee snippets", "cho hang lee snippets", "cho nhan lee snippets", "cho han lew snippets", "cho tan lee snippets", "cho shin lee 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: (((("cho han lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho han lee snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho han lee snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho han lee snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.