Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi tang du snippets" » "doi tang code snippets", "do tang du snippets", "doi mang du snippets", "doi tan du snippets", "doi nang du snippets", "doi hang dau snippets", "doi dang duc 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: (((("doi tang du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tang du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi tang du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi tang du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.