Perhaps you should try some spelling variations:
"dung le chan snippets" » "dung le code snippets", "dung len chan snippets", "dung he chan snippets", "dung de chan snippets", "dung le thanh snippets", "dung le khanh snippets", "dung le thang 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 ("dung le chan snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("dung le chan snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( dung le chan snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("dung le chan snippets"))) or ("locating bug core snippets"))*.