Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi cua du snippets" » "hoi cua du snippets", "dai cua du snippets", "dong cua du snippets", "doi cua duc snippets", "doi cua ndu snippets", "doi cua su 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 cua du 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 cua du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi cua du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi cua du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.