Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi tu co snippets" » "khi cu co snippets", "thi tu co snippets", "chi tu co snippets", "khi ty co snippets", "khi tu so snippets", "khi tu do 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 tu co 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 tu co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi tu co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi tu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.