Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi tra choi snippets" » "thi tro choi snippets", "thi tra cho snippets", "thi trao khoi snippets", "thi tran choi snippets", "thi trac choi snippets", "thi ra 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: (((("thi tra 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: (((("thi tra choi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi tra choi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi tra choi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.