Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doi dap cho snippets" » "doi dap code snippets", "hoi dap cho snippets", "doi dau cho snippets", "do dap cho snippets", "doi cap cho snippets", "doi dac cho snippets", "doi day cho 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 dap cho 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 dap cho snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doi dap cho snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi dap cho snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.