Perhaps you should try some spelling variations:
"tu doi canh snippets" » "tu doi code snippets", "tu doi hanh snippets", "tu boi canh snippets", "tu do canh snippets", "te doi canh snippets", "tu di 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.

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