Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong ma chi snippets" » "cuong ma chi snippets", "cong ha chi snippets", "cong va chi snippets", "cong a chi snippets", "cong ca chi snippets", "cong la chi 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 ma chi 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 ma chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong ma chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong ma chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.