Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran hong do snippets" » "tran hoang do snippets", "tran hung do snippets", "tran trong do snippets", "tran khong do snippets", "tran thong do snippets", "tran dong do 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: (((("tran hong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran hong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran hong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran hong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.