Perhaps you should try some spelling variations:
"tra cho cong snippets" » "tra cho code snippets", "tra cao cong snippets", "tra cua cong snippets", "tra cac cong snippets", "trang cho cong snippets", "tra chat cong snippets", "toan cho 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 ("tra cho 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 ("tra cho cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tra cho cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tra cho cong snippets"))) or ("locating bug core snippets"))*.