Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc tang cho snippets" » "tuc tang cho snippets", "luc sang cho snippets", "duc tang cho snippets", "luc trang cho snippets", "luc hang cho 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 tang cho 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 tang cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc tang cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc tang cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.