Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai moi doi snippets" » "hai muoi doi snippets", "dai moi doi snippets", "nhat moi doi snippets", "hai voi doi snippets", "hai hoi doi snippets", "hai 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: (((("hai 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: (((("hai moi doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai moi doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai moi doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.