Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi chieu de snippets" » "doc hieu de snippets", "doi chi de snippets", "ho chieu de snippets", "doi chieu ke snippets", "doi chieu day snippets", "doi hieu ve snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 chieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi chieu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi chieu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi chieu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.