Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tro tu choi snippets" » "tro su choi snippets", "tro tu chi snippets", "tro tu chon snippets", "troi tu choi snippets", "tao tu choi snippets", "trong 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: (((("tro 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: (((("tro tu choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tro tu choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tro tu choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.