Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan thi do snippets" » "dan thi code snippets", "dang thi do snippets", "tran thi do snippets", "dinh thi do snippets", "dan thi dao snippets", "dan thi mo snippets", "dan thi bo 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 thi do 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 thi do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan thi do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thi do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.