Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim dieu cua snippets" » "tim hieu cua snippets", "diem dieu cua snippets", "tinh dieu cua snippets", "tim dieu tra 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: (((("tim dieu 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: (((("tim dieu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim dieu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim dieu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.