Perhaps you should try some spelling variations:
"lua rai cong snippets" » "lua rai code snippets", "lua tai cong snippets", "lua dai cong snippets", "lua mai cong snippets", "lua lai cong snippets", "luat dai cong snippets", "luan rui 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 ("lua rai 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 ("lua rai cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( lua rai cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("lua rai cong snippets"))) or ("locating bug core snippets"))*.