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