Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi can bon snippets" » "khoa can bon snippets", "khoi nang bon snippets", "hoc can bon snippets", "khoi can ban snippets", "khoi can bo snippets", "khoi van bon 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 can bon 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 can bon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can bon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.