Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi gian cua snippets" » "toi gian cua snippets", "thoi gian cua snippets", "voi giong cua snippets", "voi gian xu snippets", "voi 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: (((("voi 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: (((("voi gian cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi gian cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi gian cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.