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