Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc thap cai snippets" » "luc tham cai snippets", "luc tai cai snippets", "luc nhat cai snippets", "luc thap tai snippets", "luc phap cai snippets", "luc thuat cai 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 thap cai 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 thap cai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc thap cai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc thap cai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.