Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc cheo cua snippets" » "luc cho cua snippets", "luc cao cua snippets", "luc chua cua snippets", "luc chuoi cua snippets", "luc co cua snippets", "luc chat 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: (((("luc cheo 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: (((("luc cheo cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc cheo cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cheo cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.