Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lap tieu cao snippets" » "lac tieu cao snippets", "luan tieu cao snippets", "lap tu cao snippets", "lap lieu cao snippets", "lap sieu cao snippets", "lap chieu cao 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: (((("lap tieu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lap tieu cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lap tieu cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lap tieu cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.