Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham doi cay snippets" » "thay doi cay snippets", "pham doi cay snippets", "thai doi cay snippets", "tham doi ca snippets", "tham doi day snippets", "tham voi cay 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 doi cay 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 doi cay snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham doi cay snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham doi cay snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.