Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoi de cau snippets" » "khoi de code snippets", "khi de cau snippets", "khoa de cau snippets", "khoi he cau snippets", "khoi ke cau snippets", "khoi le cau snippets", "khoi ve 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: (((("khoi de 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: (((("khoi de cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoi de cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi de cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.