Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don phai con snippets" » "mon phai con snippets", "doan phan con snippets", "dong phan con snippets", "don phai co snippets", "don hai con snippets", "don phau con 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: (((("don phai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("don phai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don phai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don phai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.