Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi hang doi snippets" » "doi hang code snippets", "doi khang doi snippets", "voi hang doi snippets", "doi hanh doi snippets", "doi hang di snippets", "doi hang loi snippets", "doi huong doi 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 hang doi 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 hang doi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi hang doi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hang doi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.