Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc tam cua snippets" » "luc tai cua snippets", "luc lam cua snippets", "luat tam cua snippets", "luc nam cua snippets", "luc dam 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 tam 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 tam cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc tam cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc tam cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.