Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu nhan di snippets" » "thu nhap di snippets", "thu nhat di snippets", "thu ngan di snippets", "thu nhan dai snippets", "thu nhan dip snippets", "thu nhan bi 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: (((("thu nhan 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: (((("thu nhan di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu nhan di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu nhan di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.