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