Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc tra cau snippets" » "hoc thai cau snippets", "hoc tren cau snippets", "hoc than cau snippets", "hoc tra sau snippets", "hoc ta cau snippets", "hoc tra cuu 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: (((("hoc tra cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc tra cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc tra cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc tra cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.