Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi dan cung snippets" » "moi dan dung snippets", "moi dan vung snippets", "moi ban cung snippets", "moi dang cung snippets", "hoi dan cung snippets", "doi dan cung 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 cung 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 cung snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi dan cung snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi dan cung snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.