Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"1000 tac can snippets" » "1000 bai can snippets", "1000 cau can snippets", "1000 nam can snippets", "1000 tac van snippets", "1000 tac quan snippets", "1000 tac vang 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: (((("python using java snippets") or ("1000 tac can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("1000 tac can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( 1000 tac can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("1000 tac can snippets"))) or ("locating bug code snippets"))*.