Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham moi he snippets" » "pham moi he snippets", "thanh moi he snippets", "thuat moi he snippets", "tham moi ve snippets", "tham moi ke snippets", "tham moi de 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: (((("tham moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham moi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham moi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.