Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoi dan cac snippets" » "khoi dan code snippets", "hoi dan cac snippets", "choi dan cac snippets", "khoi can cac snippets", "khoi dan cach snippets", "khoi dang cac snippets", "khoi 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: (((("khoi 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: (((("khoi dan cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoi dan cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi dan cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.