Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luc cao cuu snippets" » "luc cao code snippets", "luc cho cuu snippets", "luc canh cuu snippets", "quoc cao cuu snippets", "luc cap cuu snippets", "luc cao chu snippets", "luc cham cuu 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 cao cuu 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 cao cuu snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luc cao cuu snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc cao cuu snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.