Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"von doanh he snippets" » "van doanh he snippets", "voi doanh he snippets", "toan doanh he snippets", "von doanh ha snippets", "von doanh hieu snippets", "von doanh thu 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 doanh he 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 doanh he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( von doanh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("von doanh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.