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