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