Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"de dung vien snippets" » "de duong vien snippets", "de dung viet snippets", "de dung tien snippets", "de dang vien snippets", "de ung vien snippets", "da dung vien snippets", "de dung vien slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("de dung vien snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("de dung vien snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( de dung vien snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("de dung vien snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.