Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan cho cach snippets" » "dan cho code snippets", "dan cho cac snippets", "dan cho lach snippets", "dan co cach snippets", "danh cho cach snippets", "san cho cach snippets", "dac cho cach snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dan cho cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan cho cach snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan cho cach snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan cho cach snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.