Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac huong ve snippets" » "cac phuong ve snippets", "cac chuong ve snippets", "cac tuong ve snippets", "cac duong ve snippets", "cac cuong ve snippets", "cac huong va 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: (((("cac huong 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: (((("cac huong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac huong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac huong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.