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