Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von anh co snippets" » "van anh co snippets", "von doanh co snippets", "vuong anh co snippets", "von anh so snippets", "von danh cho snippets", "von nganh 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 anh co 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 anh co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von anh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von anh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.