Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc dan chi snippets" » "duc dan chi snippets", "duoc ban chi snippets", "duoc dai chi snippets", "duoc danh chi snippets", "duoc dan thi snippets", "duoc van chi 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 dan chi 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 dan chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc dan chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc dan chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.