Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi gi ve snippets" » "khoi ki ve snippets", "khoi noi ve snippets", "thoi gio ve snippets", "khoi gia ve snippets", "khoi gi de snippets", "khoi gi he snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 gi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi gi ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi gi ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi gi ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.