Perhaps you should try some spelling variations:
"lua tu cong snippets" » "lua tu code snippets", "lua thu cong snippets", "lua te cong snippets", "lua tai cong snippets", "luat tu cong snippets", "cua tu cong snippets", "lia tu 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 tu cong snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java snippets\") OR (\"lua tu cong snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( lua tu cong snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("lua tu cong snippets"))) OR ("locating bug core snippets"))*.