Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc tu doi snippets" » "luc tu doi snippets", "luoc su doi snippets", "duoc tu doi snippets", "luoc tu do snippets", "luoc te doi snippets", "luoc tu di 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: (((("luoc tu 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: (((("luoc tu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc tu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc tu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.