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