Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ke cac snippets" » "nhat ve cac snippets", "nhat ky cac snippets", "nhat le cac snippets", "nhat ke cau snippets", "nhat de cac 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 ("nhat ke cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("nhat ke cac snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( nhat ke cac snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("nhat ke cac snippets"))) or ("locating bug code snippets"))*.