Perhaps you should try some spelling variations:
"chon tu cong snippets" » "chon tu code snippets", "con tu cong snippets", "cho tu cong snippets", "choi tu cong snippets", "chon thu cong snippets", "chon te cong snippets", "chon tai 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 ("chon tu 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 ("chon tu cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( chon tu cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("chon tu cong snippets"))) or ("locating bug core snippets"))*.