Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vinh hung du snippets" » "dinh huong du snippets", "tinh huong du snippets", "manh hung du snippets", "vinh dung du snippets", "vinh hung vu snippets", "vinh hung tu 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: (((("vinh hung 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: (((("vinh hung du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vinh hung du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vinh hung du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.