Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro gian cua snippets" » "thoi gian cua snippets", "tran gian cua snippets", "ro giai cua snippets", "tro gian xu snippets", "tro ban cua 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: (((("tro gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tro gian cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro gian cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.