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