Perhaps you should try some spelling variations:
"tao duc cong snippets" » "tao duc code snippets", "tao duc cuong snippets", "tao dung cong snippets", "tao nuoc cong snippets", "tao duoc cong snippets", "dao duc cong snippets", "tho duc cong 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 ("tao duc cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tao duc cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tao duc cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tao duc cong snippets"))) or ("locating bug core snippets"))*.