Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc phap hoc snippets" » "hoc phap hoc snippets", "duc phap hoc snippets", "doc phan hoc snippets", "doc phap hoan snippets", "doc phap mo snippets", "doc phap han 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: (((("doc phap hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc phap hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc phap hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc phap hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.