Perhaps you should try some spelling variations:
"tran mi chon snippets" » "tran mi code snippets", "tran mai chon snippets", "tran si chon snippets", "tran minh chon snippets", "tran mo chon snippets", "tran mem chon snippets", "tran voi chon snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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 ("tran mi chon snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("tran mi chon snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( tran mi chon snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("tran mi chon snippets"))) or ("locating bug core snippets"))*.