Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot loi cong snippets" » "cot loi song snippets", "cot noi cong snippets", "cot moi cong snippets", "co loi cong snippets", "cot soi cong snippets", "mot loai cong 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 loi cong 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 loi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot loi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot loi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.