Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"truc hoa can snippets" » "trung hoa can snippets", "thuc hoat can snippets", "truc chua can snippets", "truc khoa can snippets", "truc hoa dan snippets", "truc 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: (((("truc 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: (((("truc hoa can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( truc hoa can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("truc hoa can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.