Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong toan ke snippets" » "dung toan ke snippets", "bong toan ke snippets", "cong toan ke snippets", "dong toan kiem 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 toan ke 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 toan ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong toan ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong toan ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.