Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac kiem con snippets" » "tac ke con snippets", "thi kiem con snippets", "va kiem con snippets", "tac kiem mon snippets", "tac khiem cong snippets", "tac kiem chong 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: (((("tac kiem con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac kiem con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac kiem con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac kiem con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.