Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat cach le snippets" » "nhan cach le snippets", "nhat hanh le snippets", "nhat anh le snippets", "nhat cach de snippets", "nhat cac le snippets", "nhat cach ben 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: (((("nhat cach le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat cach le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat cach le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat cach le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.