Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"moi dan cau snippets" » "moi dan code snippets", "moi dang cau snippets", "hoi dan cau snippets", "doi dan cau snippets", "moi danh cau snippets", "moi dan ca snippets", "moi dat cau 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 cau 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 cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( moi dan cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi dan cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.