Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using real snippets" » "python using metal snippets", "python using raw snippets"
"cac dai tinh snippets" » "cac dac tinh snippets", "cac dao tinh snippets", "cac dam tinh snippets", "cac dan tinh snippets", "cac bai tinh snippets", "can dai tinh 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: (((("python using real snippets") or ("cac dai tinh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using real snippets") OR ("cac dai tinh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using real snippets ) or ( cac dai tinh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using real snippets") or ("cac dai tinh snippets"))) or ("locating bug core snippets"))*.