Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi doc cua snippets" » "chi duoc cua snippets", "chi loc cua snippets", "chat doc cua snippets", "chi hoc cua snippets", "chi doi cua snippets", "chi do 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: (((("chi doc 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: (((("chi doc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi doc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi doc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.