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