Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc tiep cua snippets" » "doc tieng cua snippets", "duoc tieu cua snippets", "doc hieu cua snippets", "doc tiep can snippets", "doc dieu cua snippets", "doc tap 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: (((("doc tiep 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: (((("doc tiep cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc tiep cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc tiep cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.