Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"than du danh snippets" » "than duc danh snippets", "toan du danh snippets", "han du danh snippets", "than do danh snippets", "than du hanh snippets", "than cu danh snippets", "than du danh slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("than du danh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than du danh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than du danh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than du danh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.