Perhaps you should try some spelling variations:
"tre dan canh snippets" » "tre dan code snippets", "tre van canh snippets", "tre dan cach snippets", "tre dan hanh snippets", "tre dang canh snippets", "te dan canh snippets", "tre can canh snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"

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 java snippets") or ("tre dan canh snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tre dan canh snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tre dan canh snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tre dan canh snippets"))) or ("locating bug core snippets"))*.