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