Perhaps you should try some spelling variations:
"toc tri cong snippets" » "toc tri code snippets", "toc tai cong snippets", "toc thi cong snippets", "toc trien cong snippets", "toc thai cong snippets", "ngoc tri cong snippets", "toc jrai 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 ("toc tri 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 (\"toc tri cong snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( python using java snippets ) OR ( toc tri cong snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") OR ("toc tri cong snippets"))) OR ("locating bug core snippets"))*.