Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von dung doi snippets" » "van dung doi snippets", "vuong dung doi snippets", "con duong doi snippets", "von huong doi snippets", "von dung tai snippets", "von dung co 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 dung 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 dung doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von dung doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von dung doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.