Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luc hang cua snippets" » "luc hang code snippets", "luc sang cua snippets", "duc thang cua snippets", "duc hoang cua snippets", "luc mang cua snippets", "luc hang ca snippets", "luc huong cua snippets"
"python using java snippets" » "python using data 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 hang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc hang cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luc hang cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc hang cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.