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