Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"benh toan du snippets" » "benh tan du snippets", "benh than du snippets", "tinh toan du snippets", "benh tran duc snippets", "benh toan cau 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: (((("benh toan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("benh toan du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( benh toan du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("benh toan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.