Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tai hieu cac snippets" » "tai lieu cac snippets", "thi hieu cac snippets", "tai tieu cac snippets", "tai hieu luc snippets", "tai hieu va snippets", "tai hieu van 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: (((("tai hieu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tai hieu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tai hieu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tai hieu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.