Perhaps you should try some spelling variations:
"python using real snippets" » "python using metal snippets", "python using raw snippets"
"dan cho code snippets" » "dan cho cong snippets", "dan cfd code snippets", "dan cho con snippets", "danh cho code snippets", "san cho code snippets", "dac cho code snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan cho code snippets") OR ("python using real snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dan cho code snippets\") OR (\"python using real snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( dan cho code snippets ) OR ( python using real snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cho code snippets") OR ("python using real snippets"))) OR ("locating bug core snippets"))*.