Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bat van long snippets" » "bat van luong snippets", "bat van dong snippets", "bat van cong snippets", "ban van long snippets", "bat can long snippets", "hat van long 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: (((("bat van long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bat van long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bat van long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bat van long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.