Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dang mon du snippets" » "dong mon du snippets", "dan mon du snippets", "dang don du snippets", "dang mong du snippets", "dang mon tu snippets", "dang ton du 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: (((("dang mon 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: (((("dang mon du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang mon du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang mon du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.