Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc hoi cao snippets" » "quoc hoi cao snippets", "duoc hoc cao snippets", "duoc si cao snippets", "duoc hoi co snippets", "duoc hoi cho 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: (((("duoc hoi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc hoi cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc hoi cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc hoi cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.