Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc trang do snippets" » "luc trong do snippets", "thuc trang do snippets", "truc trang do snippets", "luc trang o snippets", "luc tang do snippets", "luc trang de 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: (((("luc trang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc trang do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc trang do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc trang do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.