Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc tinh cao snippets" » "doc trinh cao snippets", "dac tinh cao snippets", "loc tinh cao snippets", "doc tinh lao snippets", "doc tinh chat snippets", "doc tinh cach 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 tinh cao 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 tinh cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc tinh cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc tinh cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.