Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tao van hoe snippets" » "thao van hoe snippets", "tao va hoe snippets", "dao van hoe snippets", "tao van hoa snippets", "tao van hoc snippets", "tao van hieu 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 van hoe 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 van hoe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tao van hoe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tao van hoe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.