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