Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"len tan doan snippets" » "len tan code snippets", "len tran doan snippets", "len tap doan snippets", "len van doan snippets", "le tan doan snippets", "len tac doan snippets", "sen tan doan 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: (((("len tan doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len tan doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( len tan doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len tan doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.