Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von hang doi snippets" » "von bang doi snippets", "van hang doi snippets", "voi hang doi snippets", "von hang di snippets", "von hang loi snippets", "von huong doi 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: (((("von hang doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("von hang doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von hang doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von hang doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.