Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than voi cua snippets" » "than vo cua snippets", "tan voi cua snippets", "than roi cua snippets", "than hoi cua snippets", "than doi cua snippets", "than moi 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: (((("than voi 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: (((("than voi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than voi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than voi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.