Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac song ho snippets" » "khac son ho snippets", "khac xuong ho snippets", "khac hoang ho snippets", "khac dong ho snippets", "khac song vo snippets", "khac cong ho 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: (((("khac song ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac song ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac song ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac song ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.