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