Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hat che snippets" » "cong nhat che snippets", "cong chat che snippets", "cong ha che snippets", "cong hat cheo snippets", "cong han che snippets", "cong sat che 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 hat che 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 hat che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hat che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hat che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.