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