Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa cap doi snippets" » "khoa cam doi snippets", "khoa tap doi snippets", "khoa can doi snippets", "khoa cap do snippets", "khoa cau doi snippets", "khoa lap doi 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: (((("khoa cap doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa cap doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa cap doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa cap doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.