Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc moi doi snippets" » "duoc hoi doi snippets", "duoc noi doi snippets", "duoc tuoi doi snippets", "duoc voi doi snippets", "duoc moi voi 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: (((("duoc moi doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc moi doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc moi doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc moi doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.