Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi bac tong snippets" » "thi ban tong snippets", "thi tac trong snippets", "thi bac thang snippets", "thi bach tong snippets", "thi ba tong snippets", "thi tac tong 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: (((("thi bac tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi bac tong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi bac tong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi bac tong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.