Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi hoa can snippets" » "voi hoat can snippets", "voi khoa can snippets", "boi hoa can snippets", "voi hoa dan snippets", "voi hoa van 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: (((("voi hoa can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi hoa can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi hoa can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi hoa can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.