Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang du tre snippets" » "nang du tre snippets", "hang dau tre snippets", "dang duc tre snippets", "tang duc tre snippets", "tang du tru snippets", "tang dua tren 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: (((("tang du tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang du tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang du tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang du tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.