Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhap hoi doi snippets" » "nhap mon doi snippets", "nha hoc doi snippets", "phap hoc doi snippets", "nhap hoi doai snippets", "nhap hoc doi snippets", "nhap hoa doi 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: (((("nhap hoi 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: (((("nhap hoi doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhap hoi doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhap hoi doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.