Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi cong ve snippets" » "thi cong ve snippets", "phan cong ve snippets", "pham cong ve snippets", "phi cuong ve snippets", "phi cong va snippets", "phi long ve 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: (((("phi cong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi cong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi cong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi cong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.