Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc gi he snippets" » "quoc gia he snippets", "duoc gi he snippets", "quoc hoi he snippets", "quoc gi de snippets", "quoc gi ve snippets", "quoc vi he 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: (((("quoc gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc gi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc gi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.