Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lao do cua snippets" » "lao o cua snippets", "dao do cua snippets", "cao do cua snippets", "lao doi cua snippets", "lao co cua snippets", "lao 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: (((("lao do 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: (((("lao do cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lao do cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lao do cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.