Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tet len cong snippets" » "tet den cong snippets", "tet le cong snippets", "tet len con snippets", "chet len cong snippets", "tien len cong 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: (((("tet len cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tet len cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tet len cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tet len cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.