Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot cong dot snippets" » "moi cong dot snippets", "hoc cong dot snippets", "bo cong dot snippets", "mot cong mot snippets", "mot cong dong snippets", "mot cong doan 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: (((("mot cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mot cong dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot cong dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.