Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi ton du snippets" » "khoi lon du snippets", "khoi dong du snippets", "khoi tinh du snippets", "khoi toan du snippets", "khoi ton duc 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 ton du 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 ton du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi ton du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi ton du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.