Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa voi con snippets" » "hoa vo con snippets", "hoa vi con snippets", "hop voi con snippets", "hoa voi cong snippets", "hoa voi chon snippets", "hoa voi can 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: (((("hoa voi 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: (((("hoa voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.