Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von nang du snippets" » "van nang du snippets", "von bang du snippets", "voi nang du snippets", "von nang tu snippets", "von nang luc snippets", "von nang doc 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 nang 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: (((("von nang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von nang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von nang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.