Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang gap cua snippets" » "tang ap cua snippets", "tang giao cua snippets", "tang ngam cua snippets", "tang tap cua snippets", "tang lap 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: (((("tang gap 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: (((("tang gap cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang gap cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang gap cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.