Perhaps you should try some spelling variations:
"lan thi doan snippets" » "lan thi code snippets", "lan thai doan snippets", "lan thi hoan snippets", "lan thi loan snippets", "luan thi doan snippets", "loan thi doan snippets", "dan thi doan 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 ("lan thi doan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("lan thi doan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( lan thi doan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("lan thi doan snippets"))) or ("locating bug core snippets"))*.