Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung hoc con snippets" » "dung hoc code snippets", "dong hoc con snippets", "dung thuoc con snippets", "trung hoc con snippets", "dung hoc cong snippets", "dung hoc cuon snippets", "dung hoc co 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: (((("dung hoc con snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hoc con snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung hoc con snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hoc con snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.