Perhaps you should try some spelling variations:
"trinh anh cong snippets" » "trinh anh code snippets", "trinh hanh cong snippets", "trinh thanh cong snippets", "trinh kinh cong snippets", "trinh anh dong snippets"
"locating bug core snippets" » "locating bug code snippets"
"hang java java snippets" » "hang va java snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hang java java snippets") or ("trinh anh cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang java java snippets") OR ("trinh anh cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( trinh anh cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("trinh anh cong snippets"))) or ("locating bug core snippets"))*.