Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi voi co snippets" » "chi voi co snippets", "khi doi co snippets", "khi hoi co snippets", "khi voi con snippets", "khi moi co 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 voi 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 voi co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi voi co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi voi co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.