Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc huu de snippets" » "ngoc hue de snippets", "ngoc hung de snippets", "ngoc chau de snippets", "ngoc cuu de snippets", "ngoc huu du snippets", "ngoc huu dien 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: (((("ngoc huu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc huu de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc huu de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc huu de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.