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