Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va nghi di snippets" » "ca nghi di snippets", "va nghien di snippets", "va nguoi di snippets", "va nghi dinh snippets", "va nghiep di snippets", "va nghia do 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: (((("va nghi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va nghi di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va nghi di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va nghi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.