Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong te ca snippets" » "cong ty ca snippets", "cong ti ca snippets", "cong tu ca snippets", "cong te cao snippets", "cong te cua snippets", "cong te 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 te ca 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 te ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong te ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong te ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.