Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong ba hoa snippets" » "dong bac hoa snippets", "dong ban hoa snippets", "dong bao hoa snippets", "dong ma hoa snippets", "dong va hoa 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: (((("dong ba hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong ba hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong ba hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong ba hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.