Perhaps you should try some spelling variations:
"luc son cong snippets" » "luc son code snippets", "luc song cong snippets", "luc bon cong snippets", "luc san cong snippets", "lac son cong snippets", "luc sang cong snippets", "quoc son 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 ("luc son 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 ("luc son cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( luc son cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("luc son cong snippets"))) or ("locating bug core snippets"))*.