Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cot theo doi snippets" » "cot thep doi snippets", "cuon theo doi snippets", "cau theo doi snippets", "cot theo duoi snippets", "cot theo don snippets", "cot theo dong 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: (((("cot theo 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: (((("cot theo doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cot theo doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cot theo doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.