Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh duc le snippets" » "tinh duc le snippets", "trinh doc le snippets", "trinh dung le snippets", "trinh tuc le snippets", "trinh luc le 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: (((("trinh duc 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: (((("trinh duc le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh duc le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh duc le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.