Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot pham chi snippets" » "cong pham chi snippets", "dot pha chi snippets", "che pham chi snippets", "cot pham thi snippets", "cot tham chi snippets", "cot pham chieu 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 pham chi 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 pham chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot pham chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot pham chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.