Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac anh dong snippets" » "tac anh huong snippets", "tac anh son snippets", "tac danh dong snippets", "tam anh dong snippets", "tao anh dong 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: (((("tac anh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac anh dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac anh dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac anh dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.