Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phieu nho ve snippets" » "thieu nhi ve snippets", "sieu nho ve snippets", "dieu nho ve snippets", "phieu nho va 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: (((("phieu nho ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phieu nho ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phieu nho ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phieu nho ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.