Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi phau con snippets" » "khi hau con snippets", "khoa phau con snippets", "thi phap con snippets", "khi phai con snippets", "khi phan cong snippets", "khi pham 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: (((("khi phau con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi phau con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi phau con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi phau con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.