Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao dieu co snippets" » "cao dieu co snippets", "vao dieu co snippets", "than dieu co snippets", "tao dieu con snippets", "tao lieu co snippets", "tao deu co 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: (((("tao dieu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tao dieu co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao dieu co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao dieu co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.