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