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