Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong ke doi snippets" » "dong kem doi snippets", "dong ket doi snippets", "dong ky doi snippets", "dong ke do snippets", "dong te doi 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 ke 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: (((("dong ke doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong ke doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong ke doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.