Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lai thi cua snippets" » "tai thi cua snippets", "bai thi cua snippets", "hai thi cua snippets", "lai thai cua snippets", "lai thi cuc snippets", "lai tri 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: (((("lai thi 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: (((("lai thi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lai thi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lai thi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.