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