Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi cho doc snippets" » "moi co doc snippets", "hoi cho doc snippets", "mo cho doc snippets", "moi cho duoc snippets", "moi cho hoc snippets", "moi cho doi 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: (((("moi cho doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi cho doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi cho doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi cho doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.