Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran anh cac snippets" » "tran manh cac snippets", "tuan anh cac snippets", "tran thanh cac snippets", "tran hanh cac snippets", "tran anh ca snippets", "tran anh cam 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 anh cac 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 anh cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran anh cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran anh cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.