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