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