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