Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ket dan cac snippets" » "ket dan code snippets", "ket doan cac snippets", "ke dan cac snippets", "ket van cac snippets", "ket dan cach snippets", "ket dang cac snippets", "ket dan ca 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: (((("ket dan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ket dan cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( ket dan cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ket dan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.