Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi han cho snippets" » "hoi han cho snippets", "khoi can cho snippets", "khoa than cho snippets", "khoi hang cho snippets", "khoi han che snippets", "khoi 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: (((("khoi 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: (((("khoi han cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi han cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi han cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.